Session settings
Helix’s settings live under [editor] in its config file, and you can change
any of them for the current session straight from the command line:
:set cursorline truegives one option a value:toggle cursorlineflips a true/false option:toggle line-number absolute relativecycles an option through the values you list
The option names are the same ones the config file uses, so anything you learn here carries over. Tab completes them too.
Changes made this way last until the editor closes — here, until you leave
the page. That makes :set and :toggle good for trying a setting out
before you commit to it. The next step shows how to make one stick.
Work through the checklist below.