Users of Jerry Agin's underground figure macros note:

"MACRO SECREF" et al have a bug which was ignored by old
versions of PUB but now result in the error message:
	"EXTRANEOUS { IN COMMAND LINE"
To fix this, remove both the { and } from these particular
macros.  E.G.:
	.MACRO SECREF ⊂ "Section " ;{SECTION! LBL} ⊃
should be:
	.MACRO SECREF ⊂ "Section " ;SECTION! LBL ⊃

If you like, this can be abbreviated:
	.MACRO SECREF ⊂ "Section!" LBL ⊃
which did not work in old versions but now does!