Object that loads fonts in a document and allocates font families for them in the view document
where to add styles in the view document (normally head element)
where to probe text in the view document (normally body element)
Optional
Readonly
Maps Face.src to an entry for an already-loaded font.
Object that loads fonts in a document and allocates font families for them in the view document
Param: head
where to add styles in the view document (normally head element)
Param: body
where to probe text in the view document (normally body element)