TiddlyWiki uses drag and drop to power two separate features:
Tiddler manipulation via drag and drop is supported by the core user interface in the following contexts:
All tiddler links are draggable by default. They can be dragged within a browser window for manipulating tiddlers, or dragged to a different browser window to initiate an import operation
If you want to drag a link, first move it vertically, because horizontal movement is recognized by the browser as text selection.
Tag pills are also draggable, and are equivalent to simultaneously dragging all of the individual tiddlers carrying the tag.
Some common scenarios for drag and drop tiddler manipulation are available as reusable macros:
See DragAndDropMechanism for details of how to use the low level drag and drop primitives to build more complex interactions.
The standard HTML 5 drag and drop APIs used by TiddlyWiki are not generally available on mobile browsers on smartphones or tablets. The Mobile Drag And Drop Shim Plugin adds an open source library that implements partial support on many mobile browsers, including iOS and Android.