I make to-do lists at work on post its for things I have to do. e.g.
Make the software more usable.
Change radioboxes to checkboxes.
Commit and merge with master branch.
Now I have completed the 2nd task and have striked it through or I make a tick mark on it. Next I want to do the 3rd and 4th task. I want to postpone the 1st one. What kind of symbol should I draw on the post-it to best indicate that I have postponed the task?