Start and stop saving of data to files
[sim] = ld_file_save_machine(sim, ev, in, cntrl, intype, insize, fname)
in *+(size) - Data to write
cntrl * - if cntrl steps to 2 then saving is started; if it steps to 1 saving is stopped
intype - ORTD input type of data
size - amount of elements in the vector in
fname - string: Filename for saving
Note: The implementation of this function is a superblock using state machines
and the ld_savefile block. If you're interested take the source as an example.