Files : -rc ->
Arg Result : &Array : String 
    Path, Mask : String    

- FilesIn Target ( Name : 
                          If Name IS_DIRECTORY then
                           - Files >Result< Name Mask
                          Else
                           - F >Result< Name
                 )
' Target = Path '/' Mask

/

F Files ->
Arg Result : &Array : String 
    Name : String

...

/