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- Xref: sparky comp.text:1525 comp.text.tex:14622
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- From: des@inmos.co.uk (David Shepherd)
- Subject: Re: TeX and "Point" definition.
- Message-ID: <1993Jan5.143540.15048@wraxall.inmos.co.uk>
- Followup-To: comp.text.tex,comp.text
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- References: <1993Jan5.042526.5853@hparc0.aus.hp.com>
- Date: Tue, 5 Jan 93 14:35:39 GMT
- Lines: 26
-
- Dave Kruger (dak@hparc0.aus.hp.com) wrote:
- : Page 57 of the TeXbook says the following:
-
- : pt point
- : pc pica (1 pc = 12 pt)
- : in inch (1 in = 72.27 pt)
- : bp big point (72 bp = 1 in)
- : . . .
- : sp scaled point (65536 sp = 1 pt)
-
- : Don't ask me what (or what use) a scaled point is.
-
- 1sp is the smallest measurement that TeX can use. Internally, I think,
- all measurements are done in terms of sp's. (another way of looking
- at it is that all measurements are done in pts with a fixed point
- representation using 16 bits of fraction).
-
- 1sp *is* useful sometimes when you need something to be different from
- 0pt but not visibly so! i.e. giving a font a slant of 1sp makes
- LaTeX think that it is an italic font when using \em - this can
- sometimes be useful.
-
- --------------------------------------------------------------------------
- david shepherd: des@inmos.co.uk tel: 0454-616616 x 625
- inmos ltd, 1000 aztec west, almondsbury, bristol, bs12 4sq
- New Year Resolution for 1993: Start using capital letters.
-