diff --git a/genie.nanorc b/genie.nanorc
index 3c00cb9..187e864 100644
--- a/genie.nanorc
+++ b/genie.nanorc
@@ -1,20 +1,53 @@
-syntax "Genie" "\.gs$"
+## Here is an example for Genie.
+syntax "genie" "\.gs$"
 
+# Namespace.
 color magenta "\<(uses|namespace)\>"
+
+# Data types.
 color green "\<(bool|byte|char|date|datetime|decimal|double|float|int|long|object|sbyte|short|single|string|ulong|ushort)\>"
+
+# Definitions.
 color brightred "\<(const|class|construct|def|delegate|enum|exception|extern|event|final|get|init|inline|interface|override|prop|return|set|static|struct|var|virtual|weak)\>"
+
+# Keywords.
 color red "\<(abstract|as|and|break|case|cast|continue|default|delete|div|do|downto|dynamic|else|ensures|except|extern|finally|for|if|implements|in|isa|is|lock|new|not|of|out|or|otherwise|pass|private|raise|raises|readonly|ref|requires|to|try|unless|when|while)\>"
+
+# Special variables.
 color brightcyan "\<(self|super)\>"
+
+# Null value.
 color brightyellow "\<(null)\>"
+
+# Boolean.
 color yellow "\<(false|true)\>"
+
+# Builtin functions.
 color cyan "\<(array|assert|dict|list|max|min|print|prop|sizeof|typeof)\>"
-#color brightmagenta "(?&lt;![\w\.])"
+
+# Numbers.
 color brightmagenta "[0-9][0-9\.]*(m|ms|d|h|s|f|F|l|L)?"
-#color brightmagenta "(?![\w\.])"
+
+# Regular expression.
 color brightgreen "/(\\.|[^/])*/"
-color brightblue ""(\\.|[^"])*"|'(\\.|[^'])*'"
+
+# Double quoted string.
+color brightblue ""(\\.|[^"])*""
+
+# Single quoted string.
+color brightblue "'(\\.|[^'])*'"
+
+# Multiline string.
 color blue start=""""" end="""""
+
+# Line comment.
 color yellow "(^|[[:space:]])//.*"
-icolor yellow start="/\*" end="\*/"
+
+# Block comment.
+color yellow start="/\*" end="\*/"
+
+# Trailing whitespace.
 color ,green "[[:space:]]+$"
+
+# Spaces in front or rear of tabs.
 color ,red "	+ +| +	+"