Syscall index: 0x1A03
Function signature: void APP_RUNMAT(int, int);
Opens the built-in "Run-Mat" app.
The meaning of the parameters is yet to be known.
Note that even though most built-in apps do not return, the calling code is kept on stack and one can return to it using a ugly hack, for example through timers, setjmp and longjmp. The reason why they don't return is that they expect to use GetKey as an exit point.