Answer 1

...horizontal tab?

You could try \t for chr(9) // ASCII 9

Tabs can be input literally in Linux-like shells by pressing Ctrl-V first, then either the [Tab] key or Ctrl-I ("aye", the 9th letter of the English alphabet)

"Verbatim Insert"
https://superuser.com/questions/421463/why-does-ctrl-v-not-paste-in-bash-linux-shell