Editing Drag and drop (section)

== In Mac OS ==
Drag and drop, called '''click and drag''' at the time, was used in the [[Macintosh 128K|original Macintosh]] to manipulate files (for example, copying them between disks<ref>{{cite web |url=http://www.folklore.org/StoryView.py?project=Macintosh&story=Disk_Swappers_Elbow.txt&topic=Technical&sortOrder=Sort%20by%20Date&detail=medium&showcomments=1 |title=Disk Swapper's Elbow |publisher=folklore.org}}</ref> or folders<ref>{{cite web |url=http://www.folklore.org/StoryView.py?project=Macintosh&story=The_Grand_Unified_Model_The_Finder.txt |title=The Grand Unified Model (2): The Finder |publisher=folklore.org}}</ref>). [[System 7]] added the ability to open a document in an application by dropping the document icon onto the application's icon.

Apple added "Macintosh Drag and Drop" to [[System 7.5]], extending "click and drag" to common clipboard operations like copying or moving textual content within a document. Content could also be dragged into the filesystem to create a "clipping file" which could then be stored and reused. Files could also be dropped on application windows, for example to enclose a document in an email, or add an image to a word processor document.

For most of its history Mac OS has used a [[mouse button|single button mouse]] with the button covering a large portion of the top surface of the mouse. This may mitigate the ergonomic concerns of keeping the button pressed while dragging.