Editora 0.10.0. Archived, so links from that release keep working. Read the 0.18.5 page →
View: Unsplit Editor
view.unsplit Close the editor split.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for View: Unsplit Editor, then press Enter. It also has a default keybinding:
| Emacs | C-x1 |