This section clarifies a few aspects of CVS that can sometimes cause confusion.
While directories are supported, they are not versioned in the same way as traditional files are. This is particularly important in the early evolutionary stages of a project, when the structure may be in flux. Also, if the project is undergoing major changes, the structure is likely to change. See Section 15.5.4.
There is no equivalent to diff for binary files, although CVS’s support for binary files is usually sufficient. Use admin -kb to tell CVS a file is binary.
Moving a segment of code from one place in a file to another is seen as a delete (from the old location) and an unrelated add (to the new location).
As far as CVS is concerned, small formatting changes are equivalent to sweeping logic changes in the same line ranges.