In this directory different web fonts can be stored. Using web fonts, any font can be integrated into HTML pages (CSS: @font-face {...}). The image editor picks up the caption to this directory and the WYSIWYG editor lists the fonts in the font selection box. For the fonts in the following formats must be present.
TrueType: *.ttf
Embedded OpenType: *.eot
Web Open Font Format: *.woff
Free fonts in these formats can be found eg at Font Squirrel.