diff --git a/README.asciidoc b/README.asciidoc
index 972eb3d7..55492f67 100644
--- a/README.asciidoc
+++ b/README.asciidoc
@@ -624,6 +624,8 @@ the execution of the command (i.e. to quit a modified buffer, the
 command `q!` has to be used).
 
  * `cd [<directory>]`: change the current directory to `<directory>`, or the home directory is unspecified
+ * `doc <topic>`: display documentation about a topic. The completion list
+     displays the available topics.
  * `e[dit][!] <filename> [<line> [<column>]]`: open buffer on file, go to given
      line and column. If file is already opened, just switch to this file.
      use edit! to force reloading.
diff --git a/doc/manpages/commands.asciidoc b/doc/manpages/commands.asciidoc
index cd5fc784..828a4a78 100644
--- a/doc/manpages/commands.asciidoc
+++ b/doc/manpages/commands.asciidoc
@@ -16,6 +16,10 @@ command *q!* has to be used).
 	change the current directory to *directory*, or the home directory if
 	unspecified
 
+*doc* <topic>::
+	display documentation about a topic. The completion list displays the
+	available topics
+
 *e[dit][!]* <filename> [<line> [<column>]]::
 	open buffer on file, go to given line and column. If file is already
 	opened, just switch to this file. Use edit! to force reloading