% might be unexpected results. There is no check against pathological
% operations; we again assume you know what you are doing.
%

%% List of implement operators
% Here is a brief list of implemented operators, with their common meaning.
% We assume that |a| is a tree and that |b| is either another tree or a
% scalar number. All binary operators support scalar expansion.
%
% <html>
% <table border="5" cellspacing="5">
% <caption>Standard operators</caption>
% <tr><td> <code>a + b</code> </td> <td> Binary a