Re: [ft] Type1 header format checking

[Werner LEMBERG]

> What i understand till now is that every type 1 postscript font file
> starts with some text like "%!PS-AdobeFont" which has length 14
> characters.

This is specified in the `black book'; the ID strings can be either
`%!FontType1-1.0' or `%!PS-AdobeFont-1.0' (the latter identifies a
PostScript resource).

  http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/T1_SPEC.pdf

> Is there any documentation about these functions as i am unable to
> track them and know what they are actually doing? 2) if i am wrong
> than how is this, checking header format part working in Type1
> driver.

The PFB format is documented in Adobe Technote #5040.

  
http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/5040.Download_Fonts.pdf

Note that #5040 also defines `PFA'; however, this is not used today.
Instead, a PFA is simply a PostScript resource where the eexec part is
ASCII encoded instead of binary.


    Werner