Added Lua interfae. (Luis Carvalho)
diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index 743c712..6790e9c 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -1299,6 +1299,9 @@
 |:ltag|		:lt[ag]		jump to tag and add matching tags to the
 				location list
 |:lunmap|	:lu[nmap]	like ":unmap!" but includes Lang-Arg mode
+|:lua|		:lua		execute |Lua| command
+|:luado|	:luad[o]	execute Lua command for each line
+|:luafile|	:luaf[ile]	execute |Lua| script file
 |:lvimgrep|	:lv[imgrep]	search for pattern in files
 |:lvimgrepadd|	:lvimgrepa[dd]	like :vimgrep, but append to current list
 |:lwindow|	:lw[indow]	open or close location window