When set to TRUE on a type definition,
the expand_on_checkin setting specifies that files
of that type, or a type that is a sub-type, without binary contents
have keyword expansion performed when the file is checked in. By default,
base model type definitions do not define this setting, and the overall
model default specifies not to perform keyword expansion on check
in.
Type: Type
definition attribute (boolean)
Default value: not set