#*
BRANCH BRANCH, node 0 V ; Match this alternative, or the next...
-#*Back pointer
-
-#* BACK Normal "next" pointers all implicitly point forward;
-#* BACK exists to make loop structures possible.
-#* not used
-BACK BACK, no 0 V ; Match "", "next" ptr points backward.
-
#*Literals
# NOTE: the relative ordering of these types is important do not change it
#*Loops
#* STAR,PLUS '?', and complex '*' and '+', are implemented as
-#* circular BRANCH structures using BACK. Simple cases
+#* circular BRANCH structures. Simple cases
#* (one character per match) are implemented with STAR
#* and PLUS for speed and to minimize recursive plunges.
#*