+ <p>
+ Specifying a list of architecture wildcards indicates that
+ the source will build an architecture-dependent package on
+ the union of the lists of architectures from the expansion
+ of each specified architecture wildcard, and will only
+ work correctly on the architectures in the union of the
+ lists.<footnote> As mentioned in the footnote for
+ specifying a list of architectures, this is for a minority
+ of cases where the program is not portable. Generally, it
+ should not be used for new packages. Wildcards are not
+ expanded into a list of known architectures before
+ comparing to the build architecutre. Instead, the build
+ architecture is matched against wildcards and this package
+ is built if the wildcard matches.</footnote> If the source
+ package also builds at least one architecture-independent
+ package, <tt>all</tt> will also be included in the list.
+ </p>
+