Does anyone know how the CRUSADERS_UNIT_PROD11.txt file references the PROJECTILESTATS.TXT file?

It uses a shortened name form (JAV, SBOW, NINJ, HGUN, etc) to reference the proper missiles from PROJECTILESTATS.TXT to be used with the units in the CRUSADERS file. How does it know what those shortened forms refer to, and is there any way to change those names?