User submitted evaluations in DrScheme are evaluated asynchronously.
The language dialog setting can be recovered from the user's preferences with the key 'drscheme:setting.
The linespacing argument sets the additional amount of space (in DC units) inserted between each line in the editor when the editor is displayed.
See set-tabs for information about tabstops.
A new keymap% object is created for the new editor. See also get-keymap and set-keymap.
A new style-list object is created for the new editor. See also get-style-list and set-style-list.