/* @r{Repeated @code{count} times}. */
int32 measure;
-int32 width;
+int32 width; /* @r{Not always present.} */
int32 alignment;
@end example
@item int32 count;
The number of sets of variable display parameters (ordinarily the
-number of variables in the dictionary), times 3.
+number of variables in the dictionary), times 2 or 3.
@end table
The remaining members are repeated @code{count} times, in the same
@item int32 width;
The width of the display column for the variable in characters.
+This field is present if @var{count} is 3 times the number of
+variables in the dictionary. It is omitted if @var{count} is 2 times
+the number of variables.
+
@item int32 alignment;
The alignment of the variable for display purposes: