The `tm-import-tiddlers` message inserts a list of tiddlers into the pending import tiddler [[$:/Import]]. It also applies any active ''upgrader'' modules to each tiddler as it arrives (see the UpgradeMechanism for more details).
The variable `tv-auto-open-on-import` controls whether the `tm-import-tiddlers` message automatically triggers the display of the pending import tiddler [[$:/Import]]: