making it easier to use unions

[mcdaniel at uicsrd.CSRD.UIUC.EDU]

C++ permits "anonymous unions" like
	struct {
		union {
			int x;
			char * y;
		};
		int z;
	} zap;
so
	zap.z = zap.x;
is legal.  I don't find it confusing.  [I think that anonymous structs
should likewise be permitted in C++ -- which is outside the scope of C.]

In such a case, I would say
	struct {		/* or union if appropriate */
		int x;
		char * y;
	};
	int z;
outside another struct/float would likewise define 3 external
variables named x, y, and z.

Anonymous structs could thus be described as only for purposes of
grouping (like parentheses) but do not affect scope; all identifiers
declared therein are "exported" to the next scope out, whatever it may
be.

Anonymous unions would be for grouping and for storage overlay.

As for C:  probably too late to add anonymity.  Anonymous is a lousy
keyword:  too hard to speel.