%+ add
2
3
the same call, written tall: the gate, then each argument on its own line.
the first argument is indented under the rune and the last sits back at the rune's column — this “backstep” is how you will read every rune in real source.
glossary
%+ calls a gate that takes two arguments.
%+(add 2 3) is 5.
irregular forms:
(gate a b) is %+(gate a b)
add sums two atoms.
(add 2 3) is 5.