Both text and code notes in Trilium can be set to read-only. When a note is in read-only mode, it is presented to the user in a non-editable view, with the option to switch to editing mode if needed.
To set a note as read-only, add the readOnly label to the note.
For optimization purposes, Trilium will automatically set very large notes to read-only. Displaying such lengthy notes in editing mode can slow down performance, especially when editing is unnecessary.
If you want to ensure that a specific note remains editable regardless of its size, you can add the autoReadOnlyDisabled label to the note.