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All MFSes should be coded in the SYSPROG application and stored in the SYSPROCS table.
An MFS is called from BASIC+ with seven arguments. As with any BASIC+ subroutine, the arguments can be named at the programmer's discretion within the MFS code. The convention used in this chapter, however, uses the following names for the seven arguments:
| Code Block |
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SUBROUTINE MY_MFS(CODE, BFS, HANDLE, NAME, FMC, RECORD, STATUS) |
MY_MFS is the name of the MFS. You can create as many MFSes as you want simply by creating new subroutines (called CUSTOM_MFS, NEW_MFS, etc.) in SYSPROCS.
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