[OS X TeX] \intertext

[George Gratzer]

Beautifully explained, thanks.

GG

On 2010-05-01, at 5:06 PM, Ross Moore wrote:

> Hi George,
> 
> On 02/05/2010, at 12:05 AM, George Gratzer wrote:
> 
>>> LaTeX sets these dimensions, defined by TeX itself:
>>> 
>>> \abovedisplayskip=12pt plus 3pt minus 9pt
>>> \belowdisplayskip=12pt plus 3pt minus 9pt
>> 
>> which is used when?
> 
> This is all in The TeXbook.
> The above are usually used before and after the
> displayed math environments, to give vertical
> separation from surrounding paragraphs ...
> 
>> 
>> GG
> 
> ... except when the line above/below is 'short'
> (e.g. just a few words) in which case the 'shortskip'
> versions below are used instead.
> 
>>> \abovedisplayshortskip=0pt plus 3pt
>>> \belowdisplayshortskip=7pt plus 3pt minus 4pt
> 
> Note that  \abovedisplayshortskip  is roughly
> a  \baselineskip  amount shorter than  \abovedisplayskip .
> Thus the overall effect should be a fairly consistent
> separation between the equations and surrounding text,
> at least in the middle and right-hand side of the page.
> 
> But the plus/minus values allow for a significant amount
> of flexibility when establishing page-breaks. Then it is
> TeX's internal algorithms that accommodate this flexibility
> and keep the spacing consistent across different displays.
> 
>>> 
>>> You can adjust them locally.
>>> 
>>>> 
>>>> GG
>>> 
>>> 
>>> Hope this helps,
>>> 
>>> 	Ross
> 
> 
> Cheers,
> 
> 	Ross
> 
> ------------------------------------------------------------------------
> Ross Moore                                       ross at maths.mq.edu.au
> Mathematics Department                           office: E7A-419
> Macquarie University                             tel: +61 (0)2 9850 8955
> Sydney, Australia  2109                          fax: +61 (0)2 9850 8114
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