Controls VSS' use of filenames longer than the MS-DOS standard.
Long_Filenames = {Yes|No}
Instructs VSS to work with pathnames up to 255 characters long:
Long_Filenames = Yes
This variable toggles VSS between long filename mode (in which complete paths, including filenames, must not exceed 255 characters) and short filename mode (in which MS-DOS format names are used for all files). The default is Yes. It is particularly relevant under Windows NT, which supports both long-filename file systems and the MS-DOS FAT system.
You can also set this variable in your SS.INI file by using the Always Display MS-DOS Format Filenames option on the View tab in the SourceSafe Options dialog box.