unmarshall-settings in drscheme:language:language<%>
Translates a Scheme value into a settings, returning
#f if that is not possible.
(-> (union settings #f)senda-drscheme:language:languageunmarshall-settingsinput)
input: writable
unmarshall-settings in drscheme:language:language<%>
Translates a Scheme value into a settings, returning
#f if that is not possible.
( -> (union settings #f)
send a-drscheme:language:language unmarshall-settings input)
input : writable