Comments and whitespace

src/parser/expression/function.rs

@@ -1,6 +1,9 @@
 #[derive(Debug)]
 #[derive(Copy, Clone)]
 pub enum Function {
+	// When adding a function, don't forget to update help command text.
+	// It isn't automatically generated.
+
 	Abs,
 	Floor,
 	Ceil,

src/parser/expression/operator.rs

@@ -11,13 +11,16 @@ use super::Function;
 #[derive(Copy)]
 #[repr(usize)]
 pub enum Operator {
+	// When adding operators, don't forget to update help command text.
+	// It isn't automatically generated.
+
 	Define = 0, // Variable and function definition
 	ModuloLong, // Mod invoked with "mod"
-	DivideLong,
+	DivideLong, // Division invoked with "per"
 	UnitConvert,
 	Subtract,
 	Add,
-	Divide,
+	Divide, // Division invoked with "/"
 	Multiply,
 	Modulo, // Mod invoked with %
 	Negative,