[dev-context] Time primitives

[Taco Hoekwater]

Hans Hagen wrote:
> 
> maybe something
> 
> \basicloop <counter> {token list}
 >
> (kind of \testfeature in context) so that one does not have interference 
> of loop macros; i assume that a native loop has neglectable consequences

I was talking about the time measuring stuff, actually ;-)

You have to be more precise about that \basicloop thing: does it
need access to the <counter>? Is the <counter> a literal, or a
register? Should this thing be expandable? Do you need an excape
hatch?

> (this reminde me that we had some discussion about reals i.e. dimenless 
> dimens and that you had a brain wave about that)

I hope to get to that soon as well.

Taco