Transfer MPF files from 'buffer' area to main program area on HiTrol 840C

[Paul_RagotCADCAM]

We have an old (18yr?)  Hyundai (HiT5S) lathe with a Siemens HiTrol 840C control.

We do not know how to transfer files from the 'buffer' area to the main program area.

We can send/receive files via RS-232. The uploaded files (MPF) are always stored in the buffer area, as it is a catch-all area for any incoming file.

We received an MPF file (main program file) and sent it back as -is. Once in the buffer, how do you move it around?

We read the documentation, but it is a bit dense and hard to understand. so not much luck there. Even the screen shots are not the same as what we have on the screen.

Or maybe there's a way to receive MPF files directly in the proper area?

The previous owner told us he had to do a lot of typing to get the program transferred form 'buffer' to main memory- and does not remember what had to be done. So this means that sending to the buffer is 1 way that works. But seems a pain.

Paul