ratsimp vs trigsimp



On Thursday, Aug. 21, 2008, Volker van Nek wrote:

> 
> ratsimp has the evfun (see ? evfun) property, trigsimp has not. 
> 
> (%i6) declare(trigsimp, evfun)$
> (%i7) sin(x)-cos(x)^2*sin(x), trigsimp;
> (%o7) sin(x)^3
> 
Thanks for the explanation.

When I use properties(..) on, say ratsimp, I get;

(%i17) properties(ratsimp);
(%o17)     [transfun, transfun, transfun, transfun, transfun, evfun]

I don't see any index reference in the Maxima manual which
explains "transfun", and ? transfun or ?? transfun has nothing.
And why five mentions of this property??

Ted