exit htf files

Font Information for TeX4ht

Each font of TeX may have numerouos virtual hypertext font to map to.

The i directives of tex4ht.env, as well as the i switces of the tex4ht command, may be used to idenfy the subdirectories where the target virtual fonts are to be found. Aliases to the virtual fonts may be requested through directive lines idenfified by the character a.