Editora 0.18.0. Archived, so links from that release keep working. Read the 0.18.5 page →
Edit: Exchange Point and Mark
edit.exchangePointAndMark Swap the caret and the selection mark.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Edit: Exchange Point and Mark, then press Enter. It also has a default keybinding:
| Emacs | C-xC-x |