Path: utzoo!attcan!uunet!munnari.oz.au!csc.anu.oz!csis!ken
From: ken@csis.dit.csiro.au (Ken Yap)
Newsgroups: comp.text.tex
Subject: Re: Using invisible fonts in slitex
Message-ID: <1990Sep6.025850.21324@csis.dit.csiro.au>
Date: 6 Sep 90 02:58:50 GMT
References: <8258@jarthur.Claremont.EDU>
Organization: CSIRO Division of Information Technology
Lines: 28

In article <8258@jarthur.Claremont.EDU>:
>In article <583@eba.eb.ele.tue.nl>, robert@eb10.eb.ele.tue.nl (Robert Huis in 't Veld ) writes...
>>	If one wishes to make overlays with slitex and one uses
>>	the \invisible command an error-message occurrs while previewing
>>	or printing the slides. This error-message is about slitex not being 
>>	able to find the invisible fonts. Since I didn 't generate these fonts
>>	I find the error message understandable. One way of solving the problem
>>	is by generating the fonts, but I find this an unsatisfactorary
>>	solution. The invisible .fmt fonts should be sufficient since they 
>>	contain the size information of the printer, which is all that is
>>	needed to print the "invisible characters". Can anyone tell me how
>>	the latter solution can be  implemented.
>
>Generate the fonts. In PK format, they take up maybe 512 bytes
>each, maybe a little more (I don't know since on the disk where
>we keep our TeX fonts, files are allocated 5 512byte blocks at a
>time).

However this problem does not occur only with PK format fonts. Recently
I hacked up a quick and dirty SliTeX that uses PS fonts (who worries
about pixel rounding at 24pt) for OzTeX. Now if the driver knew that
some PS fonts are supposed to be invisible (by consulting a
configuration file or something) then there'd be no problem. If I'm
mistaken and the driver in OzTeX can already do this, let me know.

No, don't ask me for the macros, I still have to find a bit of spare
time to get the macros to use the PS bullet for items instead of the
cmsy bullet. And other minor things.