May of the Editors and Working environments like MS
Visual Studio, MultiEdit, Macromedia ColdFusion
Visual SlickEdit, Metrowerks Codewarrier and others now
supports SCC interface.
In few words, when you have sources controlled by
some version control system like (CVS, PVCS, Clearcase,
etc) you have possibility to make some operations like
CheckOut/Checkin (others) directly from Editor.