Long filenames are allowed in addition to the standard 8.3 names. The filenames can be 256 characters long and can have embedded spaces. With longfilenames off, HTBasic removes spaces from file specifiers and CAT listings don't have enough room for long filenames. By default use of long filename is enabled. To disable long filenames use the statement:
CONFIGURE LONGFILENAMES OFF
With LONGFILENAMES ON, spaces are not deleted from directory and file specifiers since they may be significant. Also, the listing format for CAT is changed to accommodate varying length filenames and four digit years. It is roughly modeled after the NT DIR command listing format.
