A patch is a small piece of material affixed to another, larger piece to conceal, reinforce, or repair a worn area, hole, or tear.
A software patch is a "small" program designed to fix or update a "larger" program.
A Win Mend/Patch is a window that attaches itself over another window to create a soft hook - it can overlap any window's part, hiding undesired info - like a, hm, patch.
A great idea for the Fancy Delphi Application Contest ;-)
Win Mend / PatchWindows Mend Utility can overlap any window's part, hiding undesired info. Win Mend demonstrates how to make a "soft Hook" to a third party application. Any other action can be taken after application is hooked, in this case it just overlap an area.
"Win Mend / Patch" was submitted by Miguel Gastelumendi.