From what I know, and what the video supports, this is 'simply' an analogue computer. Analogue computers are not programmable in a sense like we use the term today. They are more like Construction Sets with predefined blocks and mounting plates. In this case like a highest quality Meccano-like set. Analogue computers work, as their name say, by building a ...
Teletypes were self contained units simply executing the code received. For most codes that simply meant printing a certain character and advance by one position. Others
advanced paper by one line (LF),
returned the carriage by one position (BS)
returned the carriage to the begin of a line (CR)
or rung a bell (BEL)
All of this was done by mechanics using ...
For actual Teletypes, which are electromechanical devices whose output is ink on paper, there were these ways to move the print position (there was no actual cursor):
Carriage return: mechanically move typehead to column 1.
Line feed: mechanically roll the paper
Any printing character: move one place to the right after printing
From memory, I don't think ...