Editora 0.20.0. Archived, so links from that release keep working. Read the 0.24.0 page →
Edit: Define Abbreviation…
edit.defineAbbrev Define a new abbreviation (the word before the caret, plus its expansion).
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Edit: Define Abbreviation…, then press Enter. It also has a default keybinding:
| Emacs | C-xag |