DOS R231 sysreq

DOS safety measures for first moments of DOS install.
16 Bit military industrial robust software.
MACH1.COM writes text read from keyboard to file named MACH1.TXT
esc to quit. One forward, one away input. Backspace replace
drop shoe and cut chasers.
MACH2.EXE writes emphasized text straight to the VESA Bios
without creating any disk files. Esc to quit.
MECHA.EXE true DAT label file creator. Redirect to a text file.
colon breaks off dat one to four semicolon to quit.
Any number of labels can be created. Not just only four.
LAMBDA.EXE
log rote schedule markov four triplets
Tested on DOSBox for windows 10, works.
Tested on DOSBox Turbo for Android, works well.