CHDIR changes a drive's default directory. MKDIR creates a subdirectory.
MRDIR removes a subdirectory. FILES displays the contents of the current
directory or a specified directory.
 
CHDIR pathname$
MKDIR pathname$
RMDIR pathname$
FILES [filespec$]
 
    - pathname$    The path of the new default directory, subdirectory to
                   create, or subdirectory to remove.
    - filespec$    A filename or path (may include a drive and DOS wildcard
                   characters). If you don't specify a filespec$, FILES
                   displays all files in the current directory.
 
Example:
    MKDIR "C:\TEMP\TEST"
    CHDIR "C:\TEMP"
    FILES
    RMDIR "TEST"