Edited include format

_index.toml

@@ -6,14 +6,14 @@
 # textures defined in subindices get a prefix,
 # currently "{path}::"
 #
-# TODO: rename "texture" to "sprite"
 # TODO: check all failure modes
 # - this should always be a relative path
 # - should we allow slashes?
 # - error if there is no _index?
-# - set different prefix?
-include = ["planet", "star"]
 
+# include."path" = "label"
+include."planet" = "planet"
+include."star" = "star"
 
 # Only the root _index.toml may contain config.
 [config]