vc-sccs-master-templates

vc-sccs-master-templates is a variable defined in `vc-sccs.el'.
Its value is

("%sSCCS/s.%s" "%ss.%s" vc-sccs-search-project-dir)

Documentation:
Where to look for SCCS master files.
For a description of possible values, see `vc-check-master-templates'.

You can customize this variable.