How to Write Notes on PDF Files. The Sticky Note tool in Adobe Acrobat and Adobe Reader allows for commenting on your business PDF files. The tool can display notes in multiple colors and styles ...

Learn how to place Sticky Note or Notepad shortcuts on Windows desktop. You can also add them to the taskbar for even faster access.

You can get sticky notes on your Mac through the Stickies application, and use it to write and edit notes to create reminders on your desktop.