The Notes app in OS X lets you tear off notes and to float over the OS X desktop. You can think of this as the Stickies app on steroids, and not only does it look better, but you can share directly from the Note. Best of all, if you have iCloud set up with OS X and iOS the pinned note will automatically update when it's edited from an iPhone or iPad via the iOS Notes app.
Here's all you need to do to stick a Note on the Mac desktop:
• Launch Notes app in OS X and double-click the Note you want to tear off
• Position the floating note on the desktop and then close the primary Notes app window
Super simple to get the Note onto the desktop, but now for best part:
• Grab an iPad, iPod touch or iPhone and launch Notes app
• Locate and edit the same note, it will automatically sync and update on the OS X desktop
Ordinarily Terminal doesn’t obey the usual Option (Alt)+Delete keystroke that deletes a word behind the cursor in other apps. To make Terminal do so, hit Escape, then hit Delete. You will need to do this for each word you want to delete - Escape, then Delete; Escape, then Delete; etc.
If you’re editing a file in nano, emacs or vim, you can hold down Option (Alt) then click anywhere in the file to move the cursor there. It works at the command line too - you can jump to anywhere in the line you’re currently typing by holding down Option (Alt) and clicking there.