This is an OpenType version of the Old German fonts yfrak, ygoth, yswab designed by Yannis Haralambous in Metafont. The OpenType features make it easier to deal with the long/round s and with older forms of umlauts (small e over the letter). A style file yfonts-otf.sty is provided as a replacement, for LuaLaTeX and XeLaTeX, of yfonts.sty or oldgerm.sty.