>>8
Flip through the manual: https://scsh.net/docu/html/man.html
I think the most important is the process notation. Here's an example from the manual:
(run (| (delatex)
(begin ((char-filter char-downcase))) ; tr A-Z a-z
(spell)
(sort)
(uniq))
(< scsh.tex)
(> spell-errors.txt))The begin is Scheme, the rest are shell commands.