Does Arabic have a fixed Win Ascent and Descent?

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Does Arabic have a fixed Win Ascent and Descent?

Post by toma » Thu Dec 19, 2002 9:38 pm

I mapped an Arabic TTF, but the Win Ascent/Descent settings do not seem to be recognized in, say, MS Word. That is, with the characters' basline at 0, the descenders in Arabic seem to cut off at -443 (which seems to be the same setting as Times New Roman for example); so I tried lowering the Win Descent. I needed it to be more like -1000. Having changed the Descent to -1000, MS Word still cuts off the font at the same place :shock: --very odd and frustrating.


I have another Arabic font question, but i will post seperately.

Erwin Denissen
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Joined: Fri Oct 04, 2002 12:41 am
Location: Bilthoven, The Netherlands

Post by Erwin Denissen » Thu Dec 19, 2002 9:58 pm

In the Tables window available through the Format menu you probably have to remove an internal table named VDMX (Vertical device metrics). If this table is available in the font, it should be located on the Unsupported page.

If Windows does not locate this table in a font, it will calculate those values itself. This will take some extra time the first time it is loaded into the rasterizer.

To regenerate this table you could use a utility from Microsoft called CacheTT, located at:

CacheTT is a utility to enable the modification of TrueType and TrueType Open files. Modifications include creation/modification of one or more of the tables VDMX, hdmx and LTSH by calculating and caching values obtained from the Rasterizer. The resulting font is a complete and correct font.
Last edited by Erwin Denissen on Thu Dec 19, 2002 10:33 pm, edited 1 time in total.
Erwin Denissen
Proven Font Technology


Post by toma » Thu Dec 19, 2002 10:21 pm

1) I didn't see a VDMX table setting to delete.
2) I downloaded the program, but when i execute it, it flashes a DOS screen for a nanosecond and then disappears.

worse case scenario is to try and shrink them all (over 150 glyphs) one at a time--unless there's a way to shrink a group all at once?

thank you


Post by toma » Thu Dec 19, 2002 11:03 pm

:D Well, I don't what the delay was w/ my system, but the next instance of Word did recognize the changes that you recommended. Thank you for your help.

Thanks again!

Yet on a spin off of my last post:
1)Is there a way to increase the size of all the glyphs?
2)Is ther a way to raise/lower all/some glyphs at once? That is =/- from the 0 baseline?

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