When should I use a ellipsis in a Menu Item

Question

When should I put ... at the end of a menu item? I seem to remember reading some rules but can\'t for the life of me find them.

For context - I\'m adding a properti

Answer 1

It usually means it'll take your focus away from the current window. Like for example, notepad has a "Find..." which means you're going to focus on another window (ie dialog box) to enter something. But in firefox, it has just "Find" which then focuses on a text input on the same window.