This help file describes jfs version 1998.09.30.
Copyright and contact information is available in the jstools documentation.
Invoking jfs brings up a file selection panel with a listbox and entry widget that lets the user select a file. There are several options that control the behaviour and appearance of the file selection panel; they are described in the documentation for the j:fs procedure in the jfs.tcl library.
Both prompt and title are localisable.