ECC edits

README.md

@@ -1,7 +1,7 @@
 [tinymist]: https://marketplace.visualstudio.com/items?itemName=myriad-dreamin.tinymist
 [latex-workshop]: https://marketplace.visualstudio.com/items?itemName=James-Yu.latex-workshop
 [CC BY-NC-SA 4.0]: https://creativecommons.org/licenses/by-nc-sa/4.0
-[betalupi.com/handouts]: https://betalupi.com/handouts
+[betalupi.com/handouts]: https://static.betalupi.com/ormc
 [ORMC]: https://circles.math.ucla.edu/circles/
 [Overleaf]: https://overleaf.com
 [Typst.app]: https://typst.app
@@ -26,7 +26,7 @@ By submitting or editing a handout in this repository, you agree to release it u
 
 ## 🛠️ Contributing
 
-If you want to use one of these handouts for a class, see [betalupi.com/handouts]. \
+If you want to use one of these handouts for a class, see [`betalupi.com/handouts`](https://betalupi.com/handouts). \
 You only need to read this section if you want to edit these handouts.
 
 ### Setup
@@ -56,7 +56,7 @@ This repository is organized as follows:
 -   [`./tools`](./tools) contains build scripts, [`./.github`](./.github) configures automation. \
     You can ignore everything in these directories.
 
-All handouts in this repository are based on `handout.cls` or `handout@0.1.0`.
+All handouts in this repository are based on `ormc_handout.cls` or `handout@0.1.0`.
 
 -   If you're using Typst (preferred), read [`docs-typst.md`](./docs-typst.md)
 -   If you're still using LaTeX, read [`docs-latex.md`](./docs-latex.md).
@@ -95,8 +95,8 @@ _(I do not recommend this. The default toolchain makes it easier to share improv
 ### For LaTeX:
 
 1. Get the handout's directory (i.e, download the whole repo as a zip and extract the folder you want.)
-2. Download [`./resources/handout.cls`](./resources/handout.cls)
-3. Put this `handout.cls` in the same directory as the handout.
+2. Download [`./resources/ormc_handout.cls`](./resources/ormc_handout.cls)
+3. Put this `ormc_handout.cls` in the same directory as the handout.
 4. Fix the include path at the top of `main.tex`:
 
 You'll need to replace
@@ -104,7 +104,7 @@ You'll need to replace
 ```latex
 \documentclass[
 	...
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 ```
 
 with
@@ -112,11 +112,11 @@ with
 ```latex
 \documentclass[
 	...
-]{handout}
+]{ormc_handout}
 ```
 
 5. Make a new overleaf project with the resulting directory.
-6. **Do not use pdflatex**, it misbehaves with `handout`. Tell Overleaf to use XeLaTeX.
+6. **Do not use pdflatex**, it misbehaves with `ormc_handout`. Tell Overleaf to use XeLaTeX.
 
 ### For Typst:
 
@@ -124,5 +124,5 @@ Out-of-band typst compilation isn't supported. Clone the repository and use vsco
 This is because typst can't import packages from a relative path.
 
 If you _really_ want it, standalone typst compilation _is_ possible. \
-Follow the LaTeX instructions, but fix `handout@0.1.0` instead of `handout`. \
+Follow the LaTeX instructions, but fix `handout@0.1.0` instead of `ormc_handout`. \
 You'll figure it out.

docs-latex.md

@@ -1,25 +1,23 @@
 # LaTeX documentation
 
-All LaTeX handouts are based on [`handout.cls`](./lib/tex/handout.cls). \
+All LaTeX handouts are based on [`ormc_handout.cls`](./lib/tex/ormc_handout.cls). \
 This class is based on `article.cls`, and should work with most LaTeX packages.
 
 The best way to start a new document is to make a copy of an existing one.
-
 - [Advanced/Cryptography](./src/Advanced/Cryptography) is a good example of a simple handout.
 - [Advanced/DFAs](./src/Advanced/DFAs) is a good example of a handout with graphs.
 - [Advanced/Geometric Optimization](./src/Advanced/Geometric%20Optimization) is a good example of a handout with geometry.
 
-## Notes
 
+## Notes
 - Compile your handouts with XeLaTeX. \
-    `pdflatex` is known to misbehave with `handout.cls`. \
+  `pdflatex` is known to misbehave with `ormc_handout.cls`. \
   This will happen by default if you use vscode. \
   If you use Overleaf, you'll have to configure it manually (see document settings).
 
 ## Document Options
 
 Document options are passed to `\documentclass`, as follows:
-
 ```latex
 \documentclass[
 	% Show solutions is `solutions` is provided,
@@ -39,35 +37,32 @@ Document options are passed to `\documentclass`, as follows:
 	% This should only be used for single-page handouts
 	% (e.g, warm-ups)
 	nopagenumber
-]{handout}
+]{ormc_handout}
 ```
 
 Use `geometry` to change margins and page dimensions. US letter is the default.
 
-## Utilities
 
+## Utilities
 - `\say{text}`: Puts text in quotes, handling details like period spacing. Courtesy of `dirtytalk`.
 - `\note[Type]{text}`: Makes a note.
 - `\hint{text}`: Shorthand for `\note[Hint]{text}`
 
 ## Sections
 
-The usual LaTeX title-customization techniques _WILL NOT WORK_ with this class. \
+The usual LaTeX title-customization techniques *WILL NOT WORK* with this class. \
 Don't even try to load `titlesec`.
 
-`handout.cls` supports two levels of sections:
-
+`ormc_handout.cls` supports two levels of sections:
 - `\section`, for large parts of the handout
 - `\definition`, `\theorem`, `\proposition`, `\example`, `\remark`, `\problem`, and `\problempart`
 
 All these macros have the following syntax: `\problem{title}<label>`
-
 - `title` is the problem's title, and may be empty.
 - `label` is the problem's label. This is optional. \
   If a label is provided, this section may be referenced with `\ref{label}`.
 
 Examples:
-
 - `\problem{}`
 - `\problem{Bonus}`
 - `\problem{}<gcd>`, which may be referenced with `\ref{gcd}`

docs-typst.md

@@ -4,27 +4,23 @@ See [typst.app/docs](https://typst.app/docs) for typst's documentation. \
 All typst handouts are based on [`handout@0.1.0`](./lib/typst/local/handout/0.1.0).
 
 The best way to start a new document is to make a copy of an existing one.
-
 - [Advanced/Tropical Polynomials](./src/Advanced/Tropical%20Polynomials) is a good place to start.
 - [Warm-Ups/Painting](./src/Warm-Ups/Painting) is a good example of tikz-like pictures.
 
-## Notes
 
+## Notes
 - Typst's equivalent of tikz is cetz ([homepage](https://cetz-package.github.io), [docs](https://cetz-package.github.io/docs/api))
 - Typst handouts are always compiled with solutions. \
-    Handouts without solutions are automatically compiled and published at [betalupi.com/handouts](https://betalupi.com/handouts). \
+  Handouts without solutions are automatically compiled and published at [betalupi.com/handouts](https://static.betalupi.com/ormc). \
   If you'd like to compile a student handout manually, run the following command in a handout directory:
-
 ```bash
 typst compile main.typ --package-path ../../../lib/typst --input show_solutions=false
 ```
-
 Where `package_path` is a relative path to [./lib/typst](./lib/typst).
 
 ## Document Options
 
 All typst handouts start with the following:
-
 ```typst
 #show: handout.with(
   // Should match `meta.toml`
@@ -42,12 +38,10 @@ All typst handouts start with the following:
 ```
 
 ## Notable commands
-
 - `#v(1fr)`: Like LaTeX's `\vfill`. Creates whitespace that grows automatically. \
   `fr` means "fraction". `#v(2fr)` will fill twice as much space as `#v(1fr)` on the same page.
 
 ## Utilities
-
 - `#note([content], type: "Note type")`: Makes a note. `type` is optional.
 - `#hint([content])`: Shorthand for `#note([content], type: "Hint")`
 - `#solution([content])`: A pretty box for solutions. Hidden in student handouts.
@@ -56,13 +50,12 @@ All typst handouts start with the following:
 - `#if_no_solutions([content])`: Shows content only if we **aren't** showing solutions.
 
 ## Sections
-
 High-level sections are denoted with `=`. \
 Subsections start with `==`, subsubsections with `===`, and so on. \
 **`handout@0.1.0` is only designed to use `=`, subsections might be ugly.**
 
-`handout@0.1.0` also provides the following commands:
 
+`handout@0.1.0` also provides the following commands:
 - `problem`
 - `definition`
 - `theorem`
@@ -70,13 +63,11 @@ Subsections start with `==`, subsubsections with `===`, and so on. \
 - `remark`
 
 These all have the same syntax: `#problem("title", label: "label")`
-
 - `title` is the problem's title, and may be omitted.
 - `label` is the problem's label. This is optional. \
   If a label is provided, this problem can be referenced with `@label`
 
 **Examples:**
-
 - `#problem()`
 - `#problem("Bonus")`
 - `#problem(label: "gcd")`, which may be referenced with `@gcd`

lib/tex/macros.sty

@@ -1,5 +1,5 @@
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{../../../lib/tex/macros}[2025/03/02 Handout macros]
+\ProvidesPackage{../../../lib/tex/macros}[2023/10/16 ORMC Macros]
 
 \RequirePackage{hyperref}
 \RequirePackage{pgf}

lib/tex/ormc_handout.cls

@@ -1,5 +1,5 @@
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesClass{../../../lib/tex/handout}[2025/03/02 2.0.2 Mark's handout class]
+\ProvidesClass{../../../lib/tex/ormc_handout}[2023/05/29 2.0.2 ORMC Handout]
 
 
 
@@ -13,7 +13,7 @@
 \@twocolumnfalse
 \@twosidefalse
 \@mparswitchfalse
-% Handout-specific
+% ORMC-specific
 \newif{\if@solutions} % If false, solutions and instructor notes are hidden.
 \newif{\if@singlenumbering} % If true, the same counter is used for all objects.
 \newif{\if@nopagenumber} % If true, don't number pages.
@@ -25,7 +25,7 @@
 \DeclareOption{10pt}{\renewcommand\@ptsize{0}}
 \DeclareOption{11pt}{\renewcommand\@ptsize{1}}
 \DeclareOption{12pt}{\renewcommand\@ptsize{2}}
-% Handout-specific options
+% ORMC-specific options
 \DeclareOption{solutions}{\@solutionstrue}
 \DeclareOption{nosolutions}{\@solutionsfalse}
 \DeclareOption{multinumbering}{\@singlenumberingfalse}
@@ -37,7 +37,7 @@
 \DeclareOption{showwarning}{\@nowarningfalse}
 \DeclareOption{hidewarning}{\@nowarningtrue}
 \DeclareOption{unfinished}{\@unfinishedtrue}
-\DeclareOption*{\ClassWarning{handout}{\CurrentOption ignored}}
+\DeclareOption*{\ClassWarning{ormc_handout}{\CurrentOption ignored}}
 
 \@unfinishedfalse
 \ExecuteOptions{
@@ -629,12 +629,12 @@
 
 % Keep track of the current background color.
 % Useful for transparent tikz drawings.
-\def\bgcolor{white}
+\def\ORMCbgcolor{white}
 
 % Make a box environment.
 % These can safely be nested.
 % Args: title, back color, frame color.
-\newenvironment{hobox}[3]{
+\newenvironment{ORMCbox}[3]{
 	% \linehack draws a line across a tcolorbox.
 	% tcolorbox only supports two sections, but
 	% this hack allows us to have more.
@@ -653,7 +653,7 @@
 
 	% Keep track of the current background color.
 	% Useful for transparent tikz drawings.
-	\def\bgcolor{#2}
+	\def\ORMCbgcolor{#2}
 
 	\begin{tcolorbox}[
 		enhanced,
@@ -675,21 +675,21 @@
 }
 
 \newenvironment{examplesolution}{
-	\begin{hobox}{Example Solution}{black!10!white}{black!65!white}
+	\begin{ORMCbox}{Example Solution}{black!10!white}{black!65!white}
 } {
-	\end{hobox}
+	\end{ORMCbox}
 }
 
 \if@solutions
 	\newenvironment{solution}{
-		\begin{hobox}{Solution}{ored!10!white}{ored}
+		\begin{ORMCbox}{Solution}{ored!10!white}{ored}
 	} {
-		\end{hobox}
+		\end{ORMCbox}
 	}
 	\newenvironment{instructornote}{
-		\begin{hobox}{Note for Instructors}{ocyan!10!white}{ocyan}
+		\begin{ORMCbox}{Note for Instructors}{ocyan!10!white}{ocyan}
 	} {
-		\end{hobox}
+		\end{ORMCbox}
 	}
 \else
 	\excludecomment{solution}

lib/typst/local/handout/0.1.0/lib.typ

@@ -49,28 +49,19 @@
   // Text style
   set text(font: "New Computer Modern")
   set par(
-    leading: 0.5em,
-    spacing: 0.5em,
-
+    leading: 0.55em,
     first-line-indent: 0mm,
-    hanging-indent: 0mm,
     justify: true,
+    spacing: 0.5em,
   )
 
   //
   // List style
+  show list: set block(spacing: 0.5em, below: 1em)
   set list(
-    indent: 4mm,
-    body-indent: 1.5mm,
-
-    // Manually set spacing,
-    // `tight` has no effect.
-    spacing: 2mm,
-  )
-  set enum(
-    indent: 4mm,
-    body-indent: 1.5mm,
-    spacing: 2mm,
+    tight: false,
+    indent: 5mm,
+    spacing: 3mm,
   )
 
   //
@@ -103,9 +94,7 @@
   // Make handout title
   {
     import "header.typ": make_header, solution_warning, short_solution_warning
-    import "solution.typ": solutions_state, reset_solutions
-
-    reset_solutions()
+    import "solution.typ": show_solutions
 
     let url = link(
       "https://betalupi.com/handouts",
@@ -120,8 +109,8 @@
       top_right: url,
     )
 
-    context {
-      if solutions_state.get() {
+
+    if show_solutions {
       if short_warning {
         short_solution_warning()
       } else {
@@ -129,7 +118,6 @@
       }
     }
   }
-  }
 
   // Include rest of document
   doc

lib/typst/local/handout/0.1.0/solution.typ

@@ -1,63 +1,34 @@
 #import "misc.typ": ored, oblue
 
-
 /// If false, hide instructor info.
-/// If true, show it.
 ///
-/// Solutions are shown by default. This behavior
-/// is less surprising than hiding content by default.
-#let solutions_state = state("solutions_state", true)
-
-/// Force solutions to be hidden after this point.
-///
-/// This function produces content that must be
-/// included in the document. If it is not included,
-/// this function will have no effect.
-#let hide_solutions() = {
-  return solutions_state.update(x => false)
-}
-
-/// Force solutions to be shown after this point.
-///
-/// This function produces content that must be
-/// included in the document. If it is not included,
-/// this function will have no effect.
-#let show_solutions() = {
-  return solutions_state.update(x => true)
-}
-
-
-
-/// Reset the solution flag to its default value.
-/// This value is determined by compile flags:
 /// Compile with the following command to hide solutions:
 /// `typst compile main.typ --input show_solutions=false`
 ///
-/// Solutions are shown by default.
-///
-/// This function produces content that must be
-/// included in the document. If it is not included,
-/// this function will have no effect.
-#let reset_solutions() = {
+/// Solutions are shown by default. This behavior
+/// is less surprising than hiding content by default.
+#let show_solutions = {
   if "show_solutions" in sys.inputs {
-    if (
+    // Show solutions unless they're explicitly disabled
+    not (
       sys.inputs.show_solutions == "false" or sys.inputs.show_solutions == "no"
-    ) {
-      return solutions_state.update(x => false)
-    }
+    )
+  } else {
+    // Show solutions by default
+    true
   }
 }
 
-#let if_solutions(content) = context {
-  if solutions_state.get() { content }
+#let if_solutions(content) = {
+  if show_solutions { content }
 }
 
-#let if_no_solutions(content) = context {
-  if not solutions_state.get() { content }
+#let if_no_solutions(content) = {
+  if not show_solutions { content }
 }
 
-#let if_solutions_else(if_yes, if_no) = context {
-  if solutions_state.get() { if_yes } else { if_no }
+#let if_solutions_else(if_yes, if_no) = {
+  if show_solutions { if_yes } else { if_no }
 }
 
 #let solution(content) = {

src/Advanced/Compression/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \input{tikzset.tex}

src/Advanced/Compression/tikzset.tex

@@ -24,7 +24,7 @@
 	label/.style = {
 		rectangle,
 		% For automatic red background in solutions
-		fill = \bgcolor,
+		fill = \ORMCbgcolor,
 		draw = none,
 		rounded corners = 0mm
 	},
@@ -32,7 +32,7 @@
 	% Nodes
 	edg/.style = {
 		midway,
-		fill = \bgcolor,
+		fill = \ORMCbgcolor,
 		text = gray
 	},
 	int/.style = {},

src/Advanced/Continued Fractions/main.tex

@@ -5,7 +5,7 @@
 	shortwarning,
 	singlenumbering,
 	unfinished
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \usepackage{multicol}

src/Advanced/Cryptography/main.tex

@@ -4,7 +4,7 @@
 	solutions,
 	singlenumbering,
 	shortwarning
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \usepackage{multicol}

src/Advanced/DFAs/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \input{tikzset.tex}

src/Advanced/DFAs/tikzset.tex

@@ -24,7 +24,7 @@
 	label/.style = {
 		rectangle,
 		% For automatic red background in solutions
-		fill = \bgcolor,
+		fill = \ORMCbgcolor,
 		draw = none,
 		rounded corners = 0mm
 	},

src/Advanced/De Bruijn/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \input{tikzset.tex}

src/Advanced/De Bruijn/tikzset.tex

@@ -24,7 +24,7 @@
 	label/.style = {
 		rectangle,
 		% For automatic red background in solutions
-		fill = \bgcolor,
+		fill = \ORMCbgcolor,
 		draw = none,
 		rounded corners = 0mm
 	},

src/Advanced/Definable Sets/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Advanced/Error-Correcting Codes/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 
@@ -16,11 +16,6 @@
 \title{Error-Correcting Codes}
 \subtitle{Prepared by Mark on \today}
 
-
-% TODO:
-% ISBN section is tedious, could use some work.
-% Check problem 5
-
 \begin{document}
 
 	\maketitle

src/Advanced/Error-Correcting Codes/parts/00 detection.tex

@@ -131,7 +131,7 @@ Take a valid ISBN-13 and swap two adjacent digits. When will the result be a val
 
 \vfill
 
-\problem{}<isbnnocorrect>
+\problem{}<isbn-nocorrect>
 \texttt{978-008-2066-466} was a valid ISBN until I changed a single digit. \par
 Can you find the digit I changed? Can you recover the original ISBN?
 

src/Advanced/Error-Correcting Codes/parts/01 correction.tex

@@ -1,6 +1,6 @@
 \section{Error Correction}
 
-As we saw in \ref{isbnnocorrect}, the ISBN check-digit scheme does not allow us to correct errors. \par
+As we saw in \ref{isbn-nocorrect}, the ISBN check-digit scheme does not allow us to correct errors. \par
 QR codes feature a system that does. \par
 
 \vspace{1mm}

src/Advanced/Esoteric Languages/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	nosolutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Advanced/Estimathon/main.tex

@@ -4,7 +4,7 @@
 	solutions,
 	singlenumbering,
 	nopagenumber
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \uptitlel{Advanced 2}

src/Advanced/Generating Functions/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Advanced/Geometric Optimization/main.tex

@@ -2,7 +2,7 @@
 % use [solutions] flag to show solutions.
 \documentclass[
 	solutions
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \uptitlel{Advanced 2}

src/Advanced/Geometry of Masses/main.tex

@@ -4,7 +4,7 @@
 	solutions,
 	singlenumbering,
 	shortwarning
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \usepackage{tikz}

src/Advanced/Graph Algorithms/main.tex

@@ -2,7 +2,7 @@
 % use [solutions] flag to show solutions.
 \documentclass[
 	solutions
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \input{tikxset}

src/Advanced/Graph Algorithms/tikxset.tex

@@ -22,7 +22,7 @@
 	label/.style = {
 		circle,
 		% For automatic red background in solutions
-		fill = \bgcolor,
+		fill = \ORMCbgcolor,
 		draw = none
 	},
 	%

src/Advanced/Intro to Proofs/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	nosolutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Advanced/Introduction to Quantum/main.tex

@@ -1,7 +1,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 \usepackage{units}
 \input{src/tikzset}

src/Advanced/Introduction to Quantum/src/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../../lib/tex/handout}
+]{../../../../lib/tex/ormc_handout}
 \usepackage{../../../../lib/tex/macros}
 \usepackage{units}
 \input{tikzset}

src/Advanced/Introduction to Quantum/src/parts/01 bits.tex

@@ -462,7 +462,7 @@ Thus,
 \end{equation*}
 
 
-\begin{hobox}{Review: Multiplying Vectors by Matrices}{black!10!white}{black!65!white}
+\begin{ORMCbox}{Review: Multiplying Vectors by Matrices}{black!10!white}{black!65!white}
 	\begin{equation*}
 		Av =
 		\begin{bmatrix}
@@ -480,7 +480,7 @@ Thus,
 	\end{equation*}
 
 	Note that each element of $Av$ is the dot product of a row in $A$ and a column in $v$.
-\end{hobox}
+\end{ORMCbox}
 
 \problem{}
 Compute the following product:

src/Advanced/Introduction to Quantum/src/parts/05 quantum gates.tex

@@ -154,7 +154,7 @@ The \textit{Hadamard Gate} is given by the following matrix: \par
 \end{equation*}
 \note{Note that we divide by $\sqrt{2}$, since $H$ must be orthonormal.}
 
-\begin{hobox}{Review: Matrix Multiplication}{black!10!white}{black!65!white}
+\begin{ORMCbox}{Review: Matrix Multiplication}{black!10!white}{black!65!white}
 	Matrix multiplication works as follows:
 
 	\begin{equation*}
@@ -196,7 +196,7 @@ The \textit{Hadamard Gate} is given by the following matrix: \par
 
 	This is exactly the first column of the matrix product. \par
 	Also, note that each element of $Ac_0$ is the dot product of a row in $A$ and a column in $c_0$.
-\end{hobox}
+\end{ORMCbox}
 
 
 \problem{}

src/Advanced/Introduction to Quantum/src/tikzset.tex

@@ -13,7 +13,7 @@
 		line width = 0.35mm
 	},
 	qubit/.style = {
-		fill = \bgcolor,
+		fill = \ORMCbgcolor,
 		line width = 0.35mm
 	},
 	wire/.style = {

src/Advanced/Lambda Calculus/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Advanced/Lattices/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \usepackage{ifthen}

src/Advanced/Lattices/parts/0 intro.tex

@@ -1,6 +1,5 @@
 \definition{}
-The \textit{integer lattice} $\mathbb{Z}^n$ is the set of points with integer coordinates in $n$ dimensions. \par
-For example, $\mathbb{Z}^3$ is the set of points $(a, b, c)$ where $a$, $b$, and $c$ are integers.
+The \textit{integer lattice} $\mathbb{Z}^n \subset \mathbb{R}^n$ is the set of points with integer coordinates.
 
 \problem{}
 Draw $\mathbb{Z}^2$.
@@ -9,13 +8,12 @@ Draw $\mathbb{Z}^2$.
 
 
 \definition{}
-We say a set of vectors $\{v_1, v_2, ..., v_k\}$ \textit{generates} $\mathbb{Z}^n$
-if every lattice point can be written as
+We say a set of vectors $\{v_1, v_2, ..., v_k\}$ \textit{generates} $\mathbb{Z}^n$ if every lattice point can be written uniquely as
 $$
 	a_1v_1 + a_2v_2 + ... + a_kv_k
 $$
 for integer coefficients $a_i$. \par
-\textbf{Bonus:} show that $k$ must be at least $n$.
+It is fairly easy to show that $k$ must be at least $n$.
 
 \problem{}
 Which of the following generate $\mathbb{Z}^2$?
@@ -32,7 +30,8 @@ Which of the following generate $\mathbb{Z}^2$?
 \vfill
 
 \problem{}
-Find a set of two vectors other than $\{ (0, 1), (1, 0) \}$ that generates $\mathbb{Z}^2$. \\
+Find a set of two vectors that generates $\mathbb{Z}^2$. \\
+Don't say $\{ (0, 1), (1, 0) \}$, that's too easy.
 
 \vfill
 
@@ -45,8 +44,7 @@ Find a set of vectors that generates $\mathbb{Z}^n$.
 \pagebreak
 
 \definition{}
-Say we have a generating set of a lattice. \par
-The \textit{fundamental region} of this set is the $n$-dimensional parallelogram spanned by its members. \par
+A \textit{fundamental region} of a lattice is the parallelepiped spanned by a generating set. The exact shape of this region depends on the generating set we use.
 
 \problem{}
 Draw two fundamental regions of $\mathbb{Z}^2$ using two different generating sets. Verify that their volumes are the same.

src/Advanced/Lattices/parts/1 minkowski.tex

@@ -1,6 +1,6 @@
 \section{Minkowski's Theorem}
 
-\theorem{Blichfeldt's Theorem}<blich>
+\theorem{Blichfeldt's Theorem}
 Let $X$ be a finite connected region. If the volume of $X$ is greater than $1$, $X$ must contain two distinct points that differ by an element of $\mathbb{Z}^n$. In other words, there exist distinct $x, y \in X$ so that $x - y \in \mathbb{Z}^n$.
 
 \vspace{2mm}
@@ -9,22 +9,14 @@ Intuitively, this means that you can translate $X$ to cover two lattice points a
 
 
 \problem{}
-Draw a connected region in $\mathbb{R}^2$ with volume greater than 1 that contains no lattice points. Find two points in that region which differ by an integer vector.
+Draw a region in $\mathbb{R}^2$ with volume greater than 1 that contains no lattice points. Find two points in that region which differ by an integer vector.
 \hint{Area is two-dimensional volume.}
 
 \vfill
 
 
 \problem{}
-Draw a \textit{disconnected} region in $\mathbb{R}^2$ with volume greater than 1 that contains no lattice points, \par
-and show that no two points in that region differ by an integer vector.
-\note{In other words, show that \ref{blich} indeed requires a connected region.}
-
-\vfill
-
-\problem{}
-The following picture gives an idea for the proof of Blichfeldt's theorem in $\mathbb{Z}^2$. \par
-Explain the picture and complete the proof.
+The following picture gives an idea for the proof of Blichfeldt's theorem in $\mathbb{Z}^2$. Explain the picture and complete the proof.
 
 \begin{center}
 	\includegraphics[angle=90,width=0.5\linewidth]{proof.png}
@@ -56,8 +48,10 @@ Let $X$ be a region $\in \mathbb{R}^2$ of volume $k$. How many integral points m
 A region $X$ is \textit{convex} if the line segment connecting any two points in $X$ lies entirely in $X$.
 
 \problem{}
-Draw a convex region in two dimensions. \par
-Then, draw a two-dimensional region that is \textit{not} convex.
+\begin{itemize}
+	\item Draw a convex region in the plane.
+	\item Draw a region that is not convex.
+\end{itemize}
 
 \vfill
 \pagebreak
@@ -65,28 +59,23 @@ Then, draw a two-dimensional region that is \textit{not} convex.
 
 
 \definition{}
-We say a region $X$ is \textit{symmetric with respect to the origin} if for all points $x \in X$, $-x$ is also in $X$. \par
-In the following problems, \say{\textit{symmetric}} means \say{symmetric with respect to the origin.}
+We say a region $X$ is \textit{symmetric} if for all points $x \in X$, $-x$ is also in $X$.
 
 \problem{}
-Draw a symmetric region. \par
-Then, draw an asymmetric region.
-
-\vfill
-
-\problem{}
-Show that a convex symmetric set always contains the origin.
+\begin{itemize}
+	\item Draw a symmetric region.
+	\item Draw an asymmetric region.
+\end{itemize}
 
 \vfill
 
 \theorem{Minkowski's Theorem}<mink>
-Every convex set in $\mathbb{R}^n$ that is symmetric and has a volume \par
-greater than $2^n$ contains an integral point that isn't zero.
+Every convex set in $\mathbb{R}^n$ that is symmetric with respect to the origin and which has a volume greater than $2^n$ contains an integral point that isn't zero.
 
 
 \problem{}
 Draw a few sets that satisfy \ref{mink} in $\mathbb{R}^2$. \par
-What is a simple class of regions that has the properties listed above?
+What is the simplest region that has the properties listed above?
 
 \vfill
 

src/Advanced/Mock a Mockingbird/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Advanced/Nonstandard Analysis/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	nosolutions,
 	singlenumbering,
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 \usepackage{units}
 

src/Advanced/Origami/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	%shortwarning
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \graphicspath{ {./images/} }

src/Advanced/Pidgeonhole Problems/main.tex

@@ -2,7 +2,7 @@
 % use [solutions] flag to show solutions.
 \documentclass[
 	solutions
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \usepackage{amsmath}

src/Advanced/Random Walks/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \input{tikxset.tex}

src/Advanced/Random Walks/tikxset.tex

@@ -24,7 +24,7 @@
 	label/.style = {
 		rectangle,
 		% For automatic red background in solutions
-		fill = \bgcolor,
+		fill = \ORMCbgcolor,
 		draw = none,
 		rounded corners = 0mm
 	},

src/Advanced/Relativity/main.tex

@@ -4,7 +4,7 @@
 	solutions,
 	singlenumbering,
 	shortwarning
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 \input{diagram}
 

src/Advanced/Retrograde Analysis/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	shortwarning
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \usepackage{chessfss}

src/Advanced/Size of Sets/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Advanced/Stopping Problems/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \usepackage{units}

src/Advanced/Symmetric Groups/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 \usetikzlibrary{calc}
 

src/Advanced/Wallpaper/main.typ

@@ -1,26 +0,0 @@
-#import "@local/handout:0.1.0": *
-
-// Resources:
-//
-// https://eschermath.org/wiki/Wallpaper_Patterns.html
-// https://mathworld.wolfram.com/WallpaperGroups.html
-// https://en.wikipedia.org/wiki/Wallpaper_group
-
-#show: handout.with(
-  title: [Wallpaper Symmetry],
-  by: "Mark",
-)
-
-#include "parts/00 intro.typ"
-#pagebreak()
-
-#include "parts/01 reflect.typ"
-#pagebreak()
-
-#include "parts/02 rotate.typ"
-#pagebreak()
-
-#include "parts/03 problems.typ"
-#pagebreak()
-
-#include "parts/04 theorem.typ"

src/Advanced/Wallpaper/meta.toml

@@ -1,7 +0,0 @@
-[metadata]
-title = "Wallpaper Symmetries"
-
-
-[publish]
-handout = true
-solutions = true

src/Advanced/Wallpaper/parts/00 intro.typ

@@ -1,151 +0,0 @@
-#import "@local/handout:0.1.0": *
-#import "@preview/cetz:0.3.1"
-
-= Wallpaper Symmetries
-
-#definition()
-A _Euclidean isometry_ is a transformation of the plane that preserves distances. \
-Intuitively, an isometry moves objects on the plane without deforming them.
-
-There are four classes of Euclidean isometries:
-- translations
-- reflections
-- rotations
-- glide reflections
-#note([We can prove there are no others, but this is beyond the scope of this handout.]) \
-A simple example of each isometry is shown below:
-
-#let demo(c) = {
-  let s = 0.5
-  cetz.draw.line(
-    (0, 0),
-    (3 * s, 0),
-    (3 * s, 1 * s),
-    (1 * s, 1 * s),
-    (1 * s, 2 * s),
-    (0, 2 * s),
-    close: true,
-    fill: c,
-    stroke: black + 0mm * s,
-  )
-}
-
-#table(
-  stroke: none,
-  align: center,
-  columns: (1fr, 1fr),
-  rows: (3.5cm, 3.5cm),
-  row-gutter: 2mm,
-  [
-    #cetz.canvas({
-      import cetz.draw: *
-
-      demo(ored)
-      translate(x: -1.0, y: -1.0)
-      demo(oblue)
-    })
-    #v(1fr)
-    Translation
-  ],
-  [
-    #cetz.canvas({
-      import cetz.draw: *
-
-      circle((-2, 0), radius: 0.1, stroke: none, fill: black)
-      arc(
-        (-2, 0),
-        radius: 1,
-        anchor: "origin",
-        start: 0deg,
-        stop: -30deg,
-        mode: "PIE",
-      )
-
-      demo(ored)
-      rotate(z: -30deg, origin: (-2, 0))
-      demo(oblue)
-    })
-    #v(1fr)
-    Rotation
-  ],
-
-  [
-    #cetz.canvas({
-      import cetz.draw: *
-
-      line((-2, 0), (4, 0))
-
-      translate(x: 0, y: 0.25)
-      demo(ored)
-      set-transform(none)
-
-      set-transform((
-        (1, 0, 0, 0),
-        (0, 1, 0, 0),
-        (0, 0, 1, 0),
-        (0, 0, 0, 1),
-      ))
-
-      translate(x: 0, y: 0.25)
-      demo(oblue)
-    })
-    #v(1fr)
-    Reflection
-  ],
-  [
-    #cetz.canvas({
-      import cetz.draw: *
-
-
-      demo(ored)
-
-      set-transform((
-        (1, 0, 0, 0),
-        (0, 1, 0, 0),
-        (0, 0, 0, 0),
-        (0, 0, 0, 0),
-      ))
-      translate(x: 2, y: 0)
-
-      demo(oblue)
-
-      set-transform(none)
-      line((-1, 0), (5, 0))
-    })
-    #v(1fr)
-    Glide reflection
-  ],
-)
-
-#definition()
-A _wallpaper_ is a two-dimensional pattern that...
-- has translational symmetry in at least two non-parallel directions (and therefore fills the plane) \
-  #note[
-    "Translational symmetry" means that we can slide the entire wallpaper in some direction, \
-    eventually mapping the pattern to itself.]
-- has a countable number of reflection, rotation, or glide symmetries. \
-
-#v(1fr)
-#pagebreak()
-
-#problem()
-Is a plain square grid a valid wallpaper?
-
-#solution([
-  Yes!
-  - It has translational symmetry in the horizontal and vertical directions
-  - It has a countable number of symmetries---namely, six distinct mirror lines (horizontal, vertical, and diagonal) duplicated once per square.
-  - A square grid is #sym.convolve`442`
-])
-
-#v(1fr)
-
-
-#problem()
-Is the empty plane a valid wallpaper?
-
-#solution([
-  No, since it has uncountably many symmetries.
-])
-
-#v(1fr)

src/Advanced/Wallpaper/parts/01 reflect.typ

@@ -1,132 +0,0 @@
-#import "@local/handout:0.1.0": *
-#import "@preview/cetz:0.3.1"
-
-= Mirror Symmetry
-
-#definition()
-A _reflection_ is a transformation of the plane obtained by reflecting all points about a line. \
-If this reflection maps the wallpaper to itself, we have a _mirror symmetry_. \
-
-If $n$ such mirror lines intersect at a point, they form a _mirror node of order $n$_. \
-#note[Mirror nodes with order 1 do not exist (i.e, $n >= 2$). A line does not intersect itself!]
-
-#v(2mm)
-
-Two mirror nodes on a wallpaper are identical if we can map one to the other with a translation and a rotation while preserving the pattern on that wallpaper.
-
-#problem(label: "pat333")
-Find all three distinct mirror nodes in the following pattern. \
-What is the order of each node? \
-#hint([
-  You may notice rotational symmetry in this pattern. \
-  Don't worry about that yet, we'll discuss it later.
-])
-
-#table(
-  stroke: none,
-  align: center,
-  columns: 1fr,
-  rows: 45mm,
-  image("../res/wolfram/p3m1.svg", height: 100%),
-)
-
-#solution([
-  The mirror nodes are:
-  - the center of the amber cross
-  - the center of each right-handed group of three adjacent hexagons
-  - the center of each left-handed group of three adjacent hexagons
-])
-
-#v(1fr)
-
-
-#definition()
-_Orbifold notation_ gives us a way to describe the symmetries of a wallpaper. \
-It defines a _signature_ that fully describes all the symmetries of a given pattern. \
-We will introduce orbifold notation one symmetry at a time.
-
-#definition()
-In orbifold notation, mirror nodes are denoted by a #sym.convolve followed by a list of integer. \
-Every integer $n$ following a #sym.convolve denotes a mirror node of order $n$.
-
-#v(2mm)
-
-The order of these integers doesn't matter. #sym.convolve`234` and #sym.convolve`423` are the same signature. \
-However, we usually denote $n$-fold symmetries in descending order (that is, like #sym.convolve`432`). \
-If we have many nodes of the same order, integers may be repeated.
-
-
-#problem()
-What is the signature of the wallpaper in @pat333? \
-#hint[Again, ignore rotational symmetry for now.]
-#solution([It is #sym.convolve`333`])
-
-
-// MARK: page
-#v(1fr)
-#pagebreak()
-
-#problem()
-Find the signature of the following pattern.
-
-#table(
-  stroke: none,
-  align: center,
-  columns: 1fr,
-  rows: 60mm,
-  image("../res/*632-a.png", height: 100%),
-)
-
-
-#solution([
-  It is #sym.convolve`632`:
-  #table(
-    stroke: none,
-    align: center,
-    columns: 1fr,
-    rows: 40mm,
-    image("../res/*632-b.png", height: 100%),
-  )
-])
-
-#v(1fr)
-
-#problem()
-Draw a wallpaper pattern with signature #sym.convolve`2222`
-
-#solution([
-  Sample solutions are below.
-
-  #table(
-    stroke: none,
-    align: center,
-    columns: (1fr, 1fr),
-    rows: 50mm,
-    image("../res/wolfram/pmm.svg", height: 100%),
-    image("../res/escher/pmm.svg", height: 100%),
-  )
-])
-
-#v(1fr)
-
-#pagebreak()
-
-
-#remark()
-In an exceptional case, we have two parallel mirror lines. \
-Consider the following pattern:
-
-#table(
-  stroke: none,
-  align: center,
-  columns: 1fr,
-  rows: 60mm,
-  image("../res/**.png", height: 100%),
-)
-
-The signature of this pattern is #sym.convolve#sym.convolve
-
-#problem()
-Draw another wallpaper pattern with signature #sym.convolve#sym.convolve.
-
-#v(1fr)

src/Advanced/Wallpaper/parts/02 rotate.typ

@@ -1,181 +0,0 @@
-#import "@local/handout:0.1.0": *
-#import "@preview/cetz:0.3.1"
-
-= Rotational Symmetry
-
-
-#definition()
-A wallpaper may also have $n$-fold rotational symmetry about a point.
-#v(2mm)
-This means there are no more than $n$ rotations around that point that map the wallpaper to itself.
-#v(2mm)
-As before, two points of rotational symmetry are identical if we can perform a translation and rotation that maps one to the other without changing the wallpaper.
-
-#definition()
-In orbifold notation, rotation is specified similarly to reflection, but uses the prefix #sym.diamond.stroked.small. \
-For example:
-- #sym.diamond.stroked.small`333` denotes a pattern with three distinct centers of rotation of order 3.
-- #sym.diamond.stroked.small`4`#sym.convolve`2` denotes a pattern with one rotation center of order 4 and one mirror node of order 2.
-
-#table(
-  stroke: none,
-  align: center,
-  columns: (1fr, 1fr),
-  rows: 50mm,
-  image("../res/333.png", height: 100%), image("../res/3*3.png", height: 100%),
-)
-
-
-#problem()
-Find the three rotation centers in the left wallpaper. \
-What are their orders?
-
-#solution([This is #sym.diamond.stroked.small`333`])
-
-#v(1fr)
-
-#problem()
-Find the signature of the pattern on the right.
-
-#solution([This is #sym.diamond.stroked.small`3`#sym.convolve`3`])
-
-#v(1fr)
-
-
-#remark()
-You may have noticed that we could have an ambiguous classification, since two reflections are equivalent to a translation and a rotation.
-We thus make the following distinction: _rotational symmetry that can be explained by reflection is not rotational symmetry._
-
-#v(2mm)
-
-In other words, when classifying a pattern...
-- we first find all mirror symmetries,
-- then all rotational symmetries that are not accounted for by reflection.
-
-#pagebreak()
-
-
-// MARK: glide
-
-= Glide Reflections
-
-#definition()
-Another type of symmetry is the _glide reflection_, denoted #sym.times.
-
-A glide reflection is the result of a translation along a line followed by reflection about that line.
-
-For example, consider the following pattern:
-#table(
-  stroke: none,
-  align: center,
-  columns: 1fr,
-  rows: 60mm,
-  image("../res/*x-a.png", height: 100%),
-)
-
-#problem()
-Convince yourself that all mirror lines in this pattern are _not_ distinct. /
-In other words, this pattern has only one mirror symmetry.
-
-#solution([
-  There may seem to be two, but they are identical. \
-  We can translate one onto the other.
-])
-
-#v(1fr)
-
-
-
-#problem()
-Use the following picture to find the glide reflection in the above pattern.
-#table(
-  stroke: none,
-  align: center,
-  columns: 1fr,
-  rows: 70mm,
-  image("../res/*x-b.png", height: 100%),
-)
-
-#v(1fr)
-
-#remark()
-The signature of this wallpaper is #sym.convolve#sym.times.
-
-#pagebreak()
-
-
-#definition()
-If none of the above symmetries appear in a pattern, then we only have simple translational symmetry. We denote this with the signature #sym.circle.small.
-
-#remark()
-In summary, to find the signature of a pattern:
-- find the mirror lines (#sym.convolve) and the distinct intersections;
-- then find the rotation centers (#sym.diamond.stroked.small) not explained by reflection;
-- then find all glide reflections (#sym.times) that do not cross a mirror line.
-- If we have none of the above, our pattern must be #sym.circle.small.
-
-
-
-#problem()
-Find the signature of the following pattern:
-
-#table(
-  stroke: none,
-  align: center,
-  columns: 1fr,
-  rows: 50mm,
-  image("../res/wiki/Wallpaper_group-cm-4.jpg", height: 100%),
-)
-
-#solution([
-  This is #sym.convolve#sym.times.
-])
-
-#v(1fr)
-
-
-#problem()
-Find the signature of the following pattern:
-
-#table(
-  stroke: none,
-  align: center,
-  columns: 1fr,
-  rows: 60mm,
-  image("../res/wiki/Wallpaper_group-p4g-2.jpg", height: 100%),
-)
-
-#solution([
-  This is #sym.diamond.stroked.small`4`#sym.convolve`2`
-])
-
-#v(1fr)
-
-
-
-#pagebreak()
-
-#problem()
-Find two glide reflections in the following pattern.\
-#note[(and thus show that its signature is #sym.times#sym.times.)]
-
-
-#table(
-  stroke: none,
-  align: center,
-  columns: 1fr,
-  rows: 70mm,
-  image("../res/xx-b.png", height: 100%),
-)
-
-#solution([
-  #table(
-    stroke: none,
-    align: center,
-    columns: 1fr,
-    rows: 40mm,
-    image("../res/xx-a.png", height: 100%),
-  )
-])
-
-#v(1fr)

src/Advanced/Wallpaper/parts/03 problems.typ

@@ -1,67 +0,0 @@
-#import "@local/handout:0.1.0": *
-#import "@preview/cetz:0.3.1"
-
-#let pat(img, sol) = {
-  problem()
-
-  table(
-    stroke: none,
-    align: center,
-    columns: (1fr, 1fr),
-    rows: 80mm,
-    image(img, height: 100%), image(img, height: 100%),
-  )
-
-  solution(sol)
-  v(1fr)
-}
-
-= A few problems
-
-Find the signatures of the following patterns. Mark all mirror nodes, rotation centers, and glide reflections. \
-Each pattern is provided twice for convenience.
-
-
-#pat("../res/wolfram/cm.svg", [#sym.times#sym.convolve])
-#pat("../res/wolfram/cmm.svg", [#sym.diamond.stroked`2`#sym.convolve`22`])
-#pagebreak()
-
-
-
-
-#pat("../res/wolfram/p3.svg", [#sym.diamond.stroked`333`])
-#pat("../res/wolfram/p3m1.svg", [#sym.convolve`333`])
-#pagebreak()
-
-#pat("../res/wolfram/p4.svg", [#sym.diamond.stroked`442`])
-#pat("../res/wolfram/p4m.svg", [#sym.convolve`442`])
-#pagebreak()
-
-#pat("../res/wolfram/p6.svg", [#sym.diamond.stroked`632`])
-#pat("../res/wolfram/p6m.svg", [#sym.convolve`632`])
-#pagebreak()
-
-#pat("../res/wolfram/p4g.svg", [#sym.diamond.stroked`4`#sym.convolve`2`])
-#pat("../res/wolfram/p31m.svg", [#sym.diamond.stroked`3`#sym.convolve`3`])
-#pagebreak()
-
-#problem()
-Draw a wallpaper with the signature #sym.convolve`442` \
-#note[Make sure there are no other symmetries!]
-#v(1fr)
-#pagebreak()
-
-
-#pat("../res/wolfram/pgg.svg", [#sym.diamond.stroked`22`#sym.times])
-#pat("../res/wolfram/pmg.svg", [#sym.diamond.stroked`22`#sym.convolve])
-#pagebreak()
-
-#pat("../res/wolfram/pg.svg", [#sym.times#sym.times])
-#pat("../res/wolfram/pm.svg", [#sym.convolve#sym.convolve])
-#pagebreak()
-
-#pat("../res/wolfram/p2.svg", [#sym.diamond.stroked`2222`])
-#pat("../res/wolfram/pmm.svg", [#sym.convolve`2222`])
-#pagebreak()
-
-#pat("../res/wolfram/p1.svg", [#sym.circle.small])

src/Advanced/Wallpaper/parts/04 theorem.typ

@@ -1,100 +0,0 @@
-#import "@local/handout:0.1.0": *
-#import "@preview/cetz:0.3.1"
-
-= The Signature-Cost Theorem
-
-#definition()
-First, we'll associate a _cost_ to each type of symmetry in orbifold notation:
-
-#v(4mm)
-#align(
-  center,
-  table(
-    stroke: (1pt, 1pt),
-    align: center,
-    columns: (auto, auto, auto, auto),
-    [*Symbol*], [*Cost*], [*Symbol*], [*Cost*],
-    [#sym.circle.small], [2], [#sym.times or #sym.convolve], [1],
-    [#sym.diamond.stroked.small`2`], [1/2], [#sym.convolve`2`], [1/4],
-    [#sym.diamond.stroked.small`3`], [2/3], [#sym.convolve`3`], [1/3],
-    [#sym.dots], [#sym.dots], [#sym.dots], [#sym.dots],
-    [#sym.diamond.stroked.small`n`],
-    [$(n-1) / n$],
-    [#sym.convolve`n`],
-    [$(n-1) / (2n)$],
-  ),
-)
-
-
-We then calculate the total "cost" of a signature by adding up the costs of each component.
-
-For example, a pattern with signature #sym.convolve`333` has cost 2:
-
-#v(2mm)
-
-$
-  2 / 3 + 2 / 3 + 2 / 3 = 2
-$
-
-#problem()
-Calculate the costs of the following signatures:
-- #sym.diamond.stroked.small`3`#sym.convolve`3`
-- #sym.convolve#sym.convolve
-- #sym.diamond.stroked.small`4`#sym.convolve`2`:
-
-#solution([
-  - #sym.diamond.stroked.small`3`#sym.convolve`3`: $2/3 + 1 + 1/3 = 2$
-  - #sym.convolve#sym.convolve: $1 + 1 = 2$
-  - #sym.diamond.stroked.small`4`#sym.convolve`2`: $3/4 + 1 + 1/4 = 2$
-])
-
-#v(1fr)
-
-#theorem(name: "Signature Cost Theorem")
-The signatures of planar wallpaper patterns are exactly those with total cost 2. \
-#note([We will not prove this theorem today, accept it without proof.])
-
-#problem()
-Consider the 4 symmetries (translation, reflection, rotation, and glide reflection). \
-Which preserve orientation? Which reverse orientation?
-
-#solution([
-  - Reflections and glide reflections reverse orientation (directions of spirals).
-  - Translation and rotation preserve orientation.
-])
-
-#v(1fr)
-#pagebreak()
-
-#problem()
-Use the signature-cost theorem to find all the signatures consisting of only #sym.circle.small or rotational symmetries.
-
-#solution([
-  #sym.diamond.stroked.small`632`, #sym.diamond.stroked.small`442`, #sym.diamond.stroked.small`333`, #sym.diamond.stroked.small`2222`, #sym.circle.small
-])
-
-#v(1fr)
-
-
-#problem()
-Find all the signatures consisting of only mirror symmetries.
-
-#solution([
-  #sym.convolve`632`, #sym.convolve`442`, #sym.convolve`333`, #sym.convolve`2222`, #sym.convolve#sym.convolve
-])
-
-#v(1fr)
-
-
-#problem()
-Find all the remaining signatures. \
-Each must be a mix of of mirror symmetries, rotational symmetries, or glide reflections. \
-#hint([They are all shown in the problems section.])
-
-#solution([
-  #sym.diamond.stroked.small`3`#sym.convolve`3`, #sym.diamond.stroked.small`4`#sym.convolve`2`,
-  #sym.diamond.stroked.small`22`#sym.times, #sym.diamond.stroked.small`22`#sym.convolve,
-  #sym.times#sym.times, #sym.times#sym.convolve
-])
-
-#v(1fr)

src/Advanced/Wallpaper/res/escher/pmm.svg

@@ -1,86 +0,0 @@
-<?xml version="1.0" standalone="no"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20001102//EN" "http://www.w3.org/TR/2000/CR-SVG-20001102/DTD/svg-20001102.dtd">
-<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="10.16cm" height="5.08cm" viewBox="0 0 384 192">
-<title>pmm</title>
-<desc>Exported by Tess 1.70.</desc>
-<clipPath id="mainclip"><rect x="0" y="0" width="384" height="192"/></clipPath>
-<g style="fill-rule:evenodd; stroke-linejoin:round; stroke-linecap:round; clip-path:url(#mainclip)">
-<defs>
-<g id="Tess0p">
-<path d="
-M7.1306642022,-41.0013191628 
-L7.1306642022,-7.1306642022 
-L89.1333025278,-7.1306642022 
-L7.1306642022,-42.7839852134 
-"/></g>
-<g id="Tess0" style="fill:none; stroke:none"><use xlink:href="#Tess0p"/></g>
-<g id="Tess1" style="fill:none; stroke:rgb(0,0,0); stroke-width:1.7826660506"><use xlink:href="#Tess0p"/></g>
-</defs>
-<g transform="translate(192,96) rotate(0) scale(0.5609575611,0.5609575611)">
-<g transform="translate(-405.2631578947,-100)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(-405.2631578947,0)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(-405.2631578947,100)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(-405.2631578947,200)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(-202.6315789474,-100)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(-202.6315789474,0)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(-202.6315789474,100)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(-202.6315789474,200)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(0,-100)"><use xlink:href="#Tess1"/></g>
-<g><use xlink:href="#Tess1"/></g>
-<g transform="translate(0,100)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(0,200)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(202.6315789474,-100)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(202.6315789474,0)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(202.6315789474,100)"><use xlink:href="#Tess1"/></g>
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-<g transform="rotate(180)"><use xlink:href="#Tess1"/></g>
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-<g transform="rotate(180) scale(1,-1)"><use xlink:href="#Tess1"/></g>
-<g transform="translate(0,100) rotate(180) scale(1,-1)"><use xlink:href="#Tess1"/></g>
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-<g transform="translate(202.6315789474,100) scale(1,-1)"><use xlink:href="#Tess1"/></g>
-</g>
-</g>
-</svg>

src/Intermediate/An Introduction to Graph Theory/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Intermediate/An Introduction to Graph Theory/tikxset.tex

@@ -24,7 +24,7 @@
 	label/.style = {
 		rectangle,
 		% For automatic red background in solutions
-		fill = \bgcolor,
+		fill = \ORMCbgcolor,
 		draw = none,
 		rounded corners = 0mm
 	},

src/Intermediate/Combinatorics/main.tex

@@ -2,7 +2,7 @@
 % use [solutions] flag to show solutions.
 \documentclass[
 	solutions
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Intermediate/Instant Insanity/main.tex

@@ -2,7 +2,7 @@
 % use [solutions] flag to show solutions.
 \documentclass[
 	solutions
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Intermediate/Newton's Laws/main.tex

@@ -2,7 +2,7 @@
 % use [solutions] flag to show solutions.
 \documentclass[
 	solutions
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Intermediate/Probability/main.tex

@@ -1,6 +1,6 @@
 % use [nosolutions] flag to hide solutions.
 % use [solutions] flag to show solutions.
-\documentclass[solutions]{../../../lib/tex/handout}
+\documentclass[solutions]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Intermediate/Proof Techniques/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	singlenumbering
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \usepackage{units}

src/Intermediate/Proof Techniques/parts/2 induction.tex

@@ -190,7 +190,7 @@ For example, see the proof of the statement in \ref{binomsum} on the next page.
 \pagebreak
 
 
-\begin{hobox}{Alternative Proof}{ogrape!10!white}{ogrape}
+\begin{ORMCbox}{Alternative Proof}{ogrape!10!white}{ogrape}
 	Consider the following problem: \par
 	How many ways are there to write a number $x$ as an ordered sum of positive integers? \par
 	\note{
@@ -234,7 +234,7 @@ For example, see the proof of the statement in \ref{binomsum} on the next page.
 	We've found that the number of ways to split $x$ can be written as either
 	$\sum_{n = 1}^{x-1} \binom{x-1}{n}$ or $2^{x-1}$,
 	and therefore $\sum_{n = 1}^{x-1} \binom{x-1}{n} = 2^{x-1}$.
-\end{hobox}
+\end{ORMCbox}
 
 
 \pagebreak

src/Intermediate/Slide Rules/main.tex

@@ -2,7 +2,7 @@
 % use [solutions] flag to show solutions.
 \documentclass[
 	solutions
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Intermediate/Vectors 1/main.tex

@@ -1,6 +1,6 @@
 % use [nosolutions] flag to hide solutions.
 % use [solutions] flag to show solutions.
-\documentclass[solutions]{../../../lib/tex/handout}
+\documentclass[solutions]{../../../lib/tex/ormc_handout}
 \usepackage{adjustbox}
 \usepackage{../../../lib/tex/macros}
 

src/Intermediate/Vectors 2/main.tex

@@ -1,6 +1,6 @@
 % use [nosolutions] flag to hide solutions.
 % use [solutions] flag to show solutions.
-\documentclass[solutions]{../../../lib/tex/handout}
+\documentclass[solutions]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Warm-Ups/Flip-Flops/main.tex

@@ -3,7 +3,7 @@
 	shortwarning,
 	singlenumbering,
 	nopagenumber
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 \geometry{top = 20mm}
 

src/Warm-Ups/Ivan the Electrician/main.tex

@@ -3,7 +3,7 @@
 	hidewarning,
 	singlenumbering,
 	nopagenumber
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Warm-Ups/Jump Chess/main.tex

@@ -3,7 +3,7 @@
 	hidewarning,
 	singlenumbering,
 	nopagenumber
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 

src/Warm-Ups/Rootbound/main.tex

@@ -3,7 +3,7 @@
 	hidewarning,
 	singlenumbering,
 	nopagenumber
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}
 
 \def\utri#1#2{
@@ -102,7 +102,7 @@
 
 	\vfill
 
-	\begin{hobox}{Notes}{ogrape!10!white}{ogrape}
+	\begin{ORMCbox}{Notes}{ogrape!10!white}{ogrape}
 		\begin{itemize}
 			\item
 			Each player needs to make multiple groups before the first player's second turn. \par
@@ -111,7 +111,7 @@
 
 			\item Groups are easiest to secure near the corners or along the edges. Play there first. \par
 		\end{itemize}
-	\end{hobox}
+	\end{ORMCbox}
 
 
 

src/Warm-Ups/Slide Rules/main.tex

@@ -3,7 +3,7 @@
 \documentclass[
 	solutions,
 	shortwarning
-]{../../../lib/tex/handout}
+]{../../../lib/tex/ormc_handout}
 \usepackage{../../../lib/tex/macros}