FMS$ - Forms Management System

Overview

VX/FMS$ is a native C reimplementation of OpenVMS FMS (Forms Management System) for x86 and ARM Linux. It exports the OpenVMS FDV$ Forms Driver callable interface, so applications that call FDV$LOAD, FDV$DISPW, FDV$GET and the rest of the 66-routine set link and run unchanged. Forms authored in the FMS form language compile to the same binary form format and load from the same form libraries.

The product ships as a static library (libfms.a) plus command-line utilities and a terminal form editor. Compiled forms render to VT, ANSI, and xterm terminals through an escape-sequence driver rather than a VMS terminal driver, and every FDV$ routine returns the same VMS-style condition codes, so forms-based applications keep their existing screen behaviour and error handling on Linux.