HTerm (here 0.8.5) has some special functions which can be entered selecting “CMD” (marked yellow in screenshot) and typing.
In above screenshot you can see the characters “test” followed by <CR> being transmitted with 15ms delay between each char.
delay (e.g. between characters) in milliseconds (approx.). Accuracy might vary:
wait=100
controlling pins:
dtr=1
rts=0
multiple commands can be seperated using semicolon (;) e.g: dtr=1; rts=1; wait=20; dtr=0; rts=0; and can be mixed with ASCII/HEX/DEC/BIN according to the dropdown-box / combobox.