The SVs in the names AV have their PV being the name of the variable.
xlow+1..xhigh inclusive in the NV union is a range of cop_seq numbers for
-which the name is valid (assed through the macros COP_SEQ_RANGE_LOW and _HIGH).
-During compilation, these fields may hold the special value PERL_PADSEQ_INTRO
-to indicate various stages:
+which the name is valid (accessed through the macros COP_SEQ_RANGE_LOW and
+_HIGH). During compilation, these fields may hold the special value
+PERL_PADSEQ_INTRO to indicate various stages:
COP_SEQ_RANGE_LOW _HIGH
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