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-rw-r--r--man/feh.pre12
1 files changed, 12 insertions, 0 deletions
diff --git a/man/feh.pre b/man/feh.pre
index c55c924..79aa355 100644
--- a/man/feh.pre
+++ b/man/feh.pre
@@ -920,6 +920,18 @@ comes before
Note that this option only has an effect when a sort mode is set using
.Cm --sort .
.
+.It Cm --window-id Ar windowid
+.
+Draw to an existing X11 window by its ID
+.Ar windowid .
+This option is intended for use with software such as xcreensaver or
+xsecurelock, which provide a window for other applications to draw into.
+Unexpected things will happen if you specify a window belonging to software
+which does not expect
+.Nm
+to draw into it or attempt to use options or keybindings which affect window
+attributes, such as full-screen mode.
+.
.It Cm --xinerama-index Ar screen
.
.Pq optional feature, $MAN_XINERAMA$ in this build