labwc-config(5): update <margin> description

...to include that it is a workaround which is usually not required.

diff --git a/docs/labwc-config.5.scd b/docs/labwc-config.5.scd
index 43dec32893e4011d4d4993c8e52345cb7839f56a..08c7aef60b28f1354bf11cbc8737c672b3f98d9a 100644 (file)
--- a/docs/labwc-config.5.scd
+++ b/docs/labwc-config.5.scd
@@ -259,8 +259,14 @@ windows using the mouse.
 ## MARGIN
 
 *<margin top="" bottom="" left="" right="" output="" />*
-       Specify the number of pixels to reserve at the edges of an output.
-       New, maximized and tiled windows will not be placed in these areas.
+       Specify the number of pixels to reserve at the edges of an output
+       (typically a dislay/screen/monitor). New, maximized and tiled windows
+       will not be placed in these areas. The use-case for *<margin>* is as a
+       workaround for clients such as panels that do NOT support the
+       wlr-layer-shell protocol.
+
+       *output* is optional; if this attribute is not provided (rather than
+       leaving it an empty string) the margin will be applied to all outputs.
 
 ## RESIZE