diff --git a/autoload/ctrlp.vim b/autoload/ctrlp.vim
index f25d8b0..1477d5f 100644
--- a/autoload/ctrlp.vim
+++ b/autoload/ctrlp.vim
@@ -979,8 +979,13 @@ fu! s:OpenMulti(...)
 	let md = a:0 ? a:1 : ( md == '' ? 'v' : md )
 	let nopt = exists('g:ctrlp_open_multiple_files')
 	if s:argmap && !a:0
-		let md = s:argmaps(md)
-		if md == 'cancel' | retu | en
+		let md = s:argmaps(md, 0)
+		if md == 'c'
+			cal s:unmarksigns()
+			unl! s:marked
+			cal s:BuildPrompt(0)
+		en
+		if md =~ '\v^c(ancel)?$' | retu | en
 		let nr = nr == '0' ? ( nopt ? '' : '1' ) : nr
 	en
 	let mkd = values(s:marked)
@@ -1520,11 +1525,13 @@ fu! s:sanstail(str)
 	retu substitute(str, '\\\ze:', '', 'g')
 endf
 
-fu! s:argmaps(md, ...)
-	let roh = a:0 ? ['/[r]eplace', 'r'] : ['/h[i]dden', 'i']
-	let str = '[t]ab/[v]ertical/[h]orizontal'.roh[0].'? '
-	let args = [a:md] + ( a:0 ? [a:1] : [] )
-	retu s:choices(str, ['t', 'v', 'h', roh[1]], 's:argmaps', args)
+fu! s:argmaps(md, i)
+	let roh = [
+		\ ['OpenMulti', '/h[i]dden/[c]lear', ['i', 'c']],
+		\ ['CreateNewFile', '/[r]eplace', ['r']],
+		\ ]
+	let str = roh[a:i][0].': [t]ab/[v]ertical/[h]orizontal'.roh[a:i][1].'? '
+	retu s:choices(str, ['t', 'v', 'h'] + roh[a:i][2], 's:argmaps', [a:md, a:i])
 endf
 
 fu! s:insertstr()
diff --git a/doc/ctrlp.txt b/doc/ctrlp.txt
index 6752271..05ddeec 100644
--- a/doc/ctrlp.txt
+++ b/doc/ctrlp.txt
@@ -313,8 +313,10 @@ Pressing <c-o> or <c-y> will then prompt for a keypress. The key can be:
   t - open in tab(s)
   h - open in horizontal split(s)
   v - open in vertical split(s)
-  r - open in current window (for <c-y> only)
-  <esc>, <c-c>, <c-g> - cancel and go back to the prompt.
+  i - open as hidden buffers (for <c-o> only)
+  c - clear the marked files (for <c-o> only)
+  r - open in the current window (for <c-y> only)
+  <esc>, <c-c>, <c-u> - cancel and go back to the prompt.
   <cr> - use the default behavior specified with |g:ctrlp_open_new_file| and
   |g:ctrlp_open_multiple_files|.