nouns of infix operators



On Wed, Mar 02, 2011 at 10:57:57PM -0800, Richard Fateman wrote:
>On 3/2/2011 10:43 PM, redneb at gmx.com wrote:
>> Hello all,
>>
>> When I enter "factor(6)" in maxima it returns "2*3" (with display2d
>> set to false). I am trying to write a function that does the same
>> thing, ie it returns a product as a noun. But when I define for example
>>
>>          f(x,y) := '"*"(x,y)
>>
>> then f(2,3) returns
>>
>>          '?mtimes(2,3)
>
>no, it should return 6.  It does that for me.

There is a (single) quote in front of "*".


>>
>> and not 2*3. How does factor do it?
>
>type
>factor(6);
>?print(%)
>
>
>The factor program puts a "simp" indicator on the result, i.e. ((mtimes
>simp) 2 3)
>even though the expression is not really simplified.
>

Ok, so is there a way I can insert a simp indicator just like factor 
does? Do I have to do it lisp?