I'm literally becoming CRAZY diving into the MESS documentation (that's a MESS really! smile ) and can't find anything about the russian IE15 terminal emulator needed for the original TETRIS.

Can someone point me where to read?

I need to change some config and can't find anything useful. for example, how to avoid / eliminate that fastidious BEEP! that the terminal make at every keypress - that turn the terminal almost unusable because every beep seem to slow the entire terminal frown