TGrep2 syntax
lA >> B A is dominated by B (A is a descendant of B).
lA <<, B B is a left-most descendant of A.
lA >>, B A is a left-most descendant of B.
lA <<` B B is a right-most descendant of A.
lA >>` B A is a right-most descendant of B.
lA <<: B There is a single path of descent from A and B is on
it.
lA >>: B There is a single path of descent from B and A is on
it.
lA . B A immediately precedes B.
lA , B A immediately follows B.
lA .. B A precedes B.
lA ,, B A follows B.
lA $ B A is a sister of B (and A 6= B).
lA $. B A is a sister of and immediately precedes B.
lA $, B A is a sister of and immediately follows B.
lA $.. B A is a sister of and precedes B.
lA $,, B A is a sister of and follows B.
lA = B The node matched by A is also matched by B.