Add infos to help using for_window to man 5

1 files changed, 5 insertions, 2 deletions

diff --git a/sway/sway.5.scd b/sway/sway.5.scd
index 29c1d0e5..74963c9d 100644
--- a/sway/sway.5.scd
+++ b/sway/sway.5.scd
@@ -770,17 +770,20 @@ Mark all Firefox windows with "Browser":
 [class="Firefox"] mark Browser
 ```
 
+You may like to use swaymsg -t get_tree for finding the values of these 
+properties in practice for your applications.
+
 The following attributes may be matched with:
 
 *app_id*
         Compare value against the app id. Can be a regular expression. If value is
         \_\_focused\_\_, then the app id must be the same as that of the currently
-        focused window.
+        focused window. _app_id_ are specific to Wayland applications.
 
 *class*
         Compare value against the window class. Can be a regular expression. If
         value is \_\_focused\_\_, then the window class must be the same as that of
-        the currently focused window.
+        the currently focused window. _class_ are specific to X11 applications.
 
 *con_id*
         Compare against the internal container ID, which you can find via IPC. If