[Maxima] putting defstruct into the Maxima manual

[Raymond Toy]

Richard Fateman wrote:
> It would generally be better not to use x,y,z as field names
> because assigning values, say x:10 to them will break stuff like ff at x,
> which will be ff at 10, which is not meaningful.
>   
That seems like a bad thing.  Is is possible to make it so that ff at x
remains ff at x, even if x has been assigned a value?

Ray