2 files changed, 7 insertions, 2 deletions

diff --git a/doc/asciidoc/fluxbox-keys.txt b/doc/asciidoc/fluxbox-keys.txt
index 399fc6b..d70495a 100644
--- a/doc/asciidoc/fluxbox-keys.txt
+++ b/doc/asciidoc/fluxbox-keys.txt
@@ -305,7 +305,9 @@ two arguments;;
 
 *SetHead* 'number'::
         Moves the window to the given display head. Only available when fluxbox
-        has been compiled with Xinerama support.
+        has been compiled with Xinerama support. Heads are numbered starting at *1*,
+        with the special value *0* meaning "Move to the head where the mouse pointer
+        currently resides".
 
 *SendToNextHead* ['offset'] / *SendToPrevHead* ['offset']::
         Sends the current window to the next/previous display head. If you
diff --git a/doc/fluxbox-keys.5.in b/doc/fluxbox-keys.5.in
index 799a8d4..6d69b48 100644
--- a/doc/fluxbox-keys.5.in
+++ b/doc/fluxbox-keys.5.in
@@ -614,7 +614,10 @@ First value becomes the focused alpha, second becomes the unfocused alpha value\
 .PP
 \fBSetHead\fR \fInumber\fR
 .RS 4
-Moves the window to the given display head\&. Only available when fluxbox has been compiled with Xinerama support\&.
+Moves the window to the given display head\&. Only available when fluxbox has been compiled with Xinerama support\&. Heads are numbered starting at
+\fB1\fR, with the special value
+\fB0\fR
+meaning "Move to the head where the mouse pointer currently resides"\&.
 .RE
 .PP
 \fBSendToNextHead\fR [\fIoffset\fR] / \fBSendToPrevHead\fR [\fIoffset\fR]