Added 'colorcolumn' option. Partly by Gregor Uhlenheuer.
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index cd06f16..ebbe891 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -4212,6 +4212,8 @@
'highlight' option default. Note that the highlighting depends on the value
of 'background'. You can see the current settings with the ":highlight"
command.
+ *hl-ColorColumn*
+ColorColumn used for the columns set with 'colorcolumn'
*hl-Conceal*
Conceal placeholder characters substituted for concealed
text (see 'conceallevel')