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Overfull \vbox while \output is active

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Adrian GURIA

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Jun 1, 1998, 3:00:00 AM6/1/98
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Hi

I'm a newbie in TeX and LaTeX.
My problem is: when I compile a text, I get the following

...
[23]
Overfull \vbox (2.20828pt too large) has occurred while \output is
active
[24]
...

What means this message (in detail)? What can be the cause?
What can I do so that I not have such messages anymore?

Please help me.

James Kilfiger

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Jun 1, 1998, 3:00:00 AM6/1/98
to

Adrian GURIA (adr...@uaic.ro) wrote:
> My problem is: when I compile a text, I get the following
> [23]
> Overfull \vbox (2.20828pt too large) has occurred while \output is
> active
> [24]
> ...
> What does this message mean (in detail)? What can be the cause?

> What can I do so that I not have such messages anymore?

It means that TeX can't quite fit all of the text and other stuff on
your page, (\output is the page-making routine). It has overshot by
2.2pt \approx 0.7mm (ie not much). Provided the output looks ok I
would just ignore it. If it really bothers you, you could put
\enlargethispage{3pt} somewhere on page 24. To make the computer believe
the page is big enough to fit your stuff on, and therefore not complain
about it. But don't bother with this kind of stuff until you are
preparing your final copy.

James

Robin Fairbairns

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Jun 1, 1998, 3:00:00 AM6/1/98
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In article <3572EA...@uaic.ro>, Adrian GURIA <adr...@uaic.ro> wrote:
>My problem is: when I compile a text, I get the following
>
>...

>[23]
>Overfull \vbox (2.20828pt too large) has occurred while \output is
>active
>[24]
>...
>
>What means this message (in detail)?

\output is the code that takes what tex has written so far and puts
out one page (if it decides that's the right thing to do). you
declare to tex what size the page should be, and there is sometimes an
occasion where the `best' way of making up the page overruns the size
you declared. this has happened in this case.

>What can be the cause?

lots of things. a common one is changing the page headers.

without more information about your document, it's hard to guess what
the problem actually is.

>What can I do so that I not have such messages anymore?

personally, i would ignore such a small overfill (0.78mm), unless it
appeared on every page -- it would do that if there was a problem with
the heading (the running head, that is).

if your document is using fancyhdr to produce page headings, you
should consult the fancyhdr documentation about this error message.
--
I live in the crowd of jollity, not so much to enjoy company as to shun
myself. -- Samuel Johnson

Daniel Luecking

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Jun 1, 1998, 3:00:00 AM6/1/98
to

Adrian GURIA <adr...@uaic.ro> writes:

>Hi

>I'm a newbie in TeX and LaTeX.

>My problem is: when I compile a text, I get the following

>...
>[23]
>Overfull \vbox (2.20828pt too large) has occurred while \output is
>active
>[24]
>...

>What means this message (in detail)?

It means in the course of assembling the parts of the page for output,
TeX was required to place text in a \vbox of a particular height, but
was unable to fit it into that height.

Exactly what box was too high depends on the sort of output routine is
in effect. Typically there are 3 or more boxes to a page: the headline,
the footline and the page body. In addition to those there can be floats
and footnotes, and others defined by some package. Most of these boxes
are allowed to grow to whatever height is necessary, except (usually)
the headline and the pagebody. When all these boxes are produced, TeX
packs them into a single \vbox and sends it to the DVI file.
This grand \vbox may have a particular height required, also.

> What can be the cause?

1. The text on the page has no feasible breakpoint, causing the box for the
page to be packed too full (in my experience there is ususally S)ME
breakpoint and the page is reported as underful in preference to being
overful

2. (and this is more likely) the headline box is too small for its
contents. This, however, will typically cause the message on EVERY page,
unless the headline changes radically (say it contains some tall math in
some section title).

>What can I do so that I not have such messages anymore?

1. Rewrite the page in question or adjust \textheight, in the first
case.

2. Increase \headheight in the second.

--
Dan Luecking Dept. of Mathematical Sciences
luec...@comp.uark.edu University of Arkansas
http://comp.uark.edu/~luecking/ Fayetteville, AR 72101

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