thank you very much for explanation. It’s clear now. First is necessary differentiate MS-DOS command line and windows command line. MS-DOS supported less commands and probably a bit differently. I don’t have original MS-DOS installed now and can’t test CTRL+C functionality. But I remember CTRL+BREAK. In my childhood I used Pascal language and I used ctrl+break often. Both ctrl+c and ctrl+break don’t work in desktop dosbox neither android version. But here one guy wrote patch for ctrl+break:
What do you think? Maybe we can try it’s functionality. But probably next week, I have some things half-done and I want finish them first.