An aligner is a special single-line token which specifies the alignment of the subsequent text. It is essentially
'modal' - all text from the token onward (until another aligner is encountered) is wrapped in a
(or unwrapped in the case of left-alignment, as that is the default).
==>is produced with 2 or more
=s followed by a
<==is restored with a
<followed by 2 or more
<==>is produced with
<, 2 or more
=, and a closing
><, then 1 or more
=. The ratio of quantity of left
=s and right
the alignment: for instance, one
= to the left and three
=s to the right produces 25% left alignment.
Any amount of whitespace is permitted before or after each token, as long as it is on a single line.
==> This is right-aligned =><= This is centered <==> This is justified <== This is left-aligned (undoes the above) ===><= This has margins 3/4 left, 1/4 right =><===== This has margins 1/6 left, 5/6 right.