=head1 METHODS
-=head2 C<< register $keyword => $code >>
+=head2 C<register>
+
+ LaTeX::Tikz::Interface->register($keyword => $code)
Registers C<$code> to be available with C<< Tikz->$keyword >>.
require LaTeX::TikZ::Set::Raw; # raw
- require LaTeX::TikZ::Set::Union; # union
+ require LaTeX::TikZ::Set::Union; # union, path
require LaTeX::TikZ::Set::Sequence; # seq
require LaTeX::TikZ::Set::Chain; # chain, join