Editing Mouse button (section)

==Apple==
[[File:Apple Desktop Bus Mouse -- side.jpg|250px|thumb|Single-button [[Apple Desktop Bus Mouse]] from the mid 80s to early 90s]]

Historically, Apple Lisa and [[Macintosh]] mice had a single button. The modifier keys [[command key|command]] and [[option key|option]] were required in [[Mac OS]] for alternative mouse operations, such as creating an alias (shortcut) or copying a file instead of moving it. When Apple introduced context menus into Mac OS, they were opened by holding [[control key|control]] and then clicking. A program called TheMouse2B permitted right-click context menus in classic Mac OS for two-button mice, by simulating ctrl+click; in particular, Macintosh clones with [[PS/2]] ports would accept PC mice, and TheMouse2B supported these.

Since the introduction of Mac OS X (now macOS) USB mice have been supported, and context menus could be opened with right-click if a supporting mouse was present (initially third-party mice only).