On Tue, Sep 28, 2010 at 9:37 AM, Mark Polesky <[email protected]> wrote:

> NR 4.1.2 "Page formatting" defines stretchability as "the
> ease with which the stretchable space increases when a page
> is stretched."  Can anyone provide a more technical
> quantified explanation?


We space systems by simulating ideal springs (more or less). Stretchability
is the inverse of the spring constant in Hooke's law. A reasonable default
is stretchability = space, because it keeps the proportions constant
(assuming there are no collisions).


> What is one stretchability unit?
> How will I know which value to use?  Is there a max value?
> I see the default stretchability for bottom-system-spacing
> is 5.  Unfortunately, this doesn't tell me anything about
> what I should expect to happen.  5 of what?
>
> Thanks
> - Mark
>
>
>
>
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