you could load it with info yourself using /EDITBOX
while also ignoring the text using ON INPUT
so the only effect is its stored in the "back input buffer" (i dont know the offical name)
A note on this, you can say anything in any window using editbox, but the "back input buffer" only works on the active window, which may mean your actions would be noticeable, may not be as well as it would happen fast.
Also you can only load one line at a time into it, so you wouild need to load the first line, allow the on input to cacth it, then load the next from that on input.