This class automatically uses the standard keymap and performs
automatic parenthesis-matching. Modes can be attached to
mred:edit% buffers; see Text Modes.
(make-object mred:edit% line-spacingtabstopsnumtabs)->mred:edit% object line-spacing = 1.0 : inexact real tabstops = null : boxed inexact real or null numtabs = 0 : small integer