diff --git a/Tricks.md b/Tricks.md
index 89492fd..ab77464 100644
--- a/Tricks.md
+++ b/Tricks.md
@@ -2,6 +2,12 @@
     
     swaymsg -t get_outputs | jq -r '.[] | select(.focused) | (.current_mode.width | tostring) + "x" + (.current_mode.height | tostring)'
 
+# Start a program on a specific workspace
+
+    swaymsg 'workspace test; exec gnome-calculator; workspace back_and_forth'
+
+This works as long as sway can match the PID of a new window to the PID of the exec'd command (or one of its children).
+
 # Upload screenshot and copy url to clipboard
 
     bindsym $mod+Shift+Print exec slurp | grim -g - - | curl --form 'file=@-' http://0x0.st | wl-copy && swaynag -m "screenshot uploaded & url copied to clipboard"