With time Eastern European, Greek and Cyrillic character sets have been added as well. Alternate glyphs include rounded dots, old style figures, and alternate cedilla. The entire family includes extended characters such as arrows, fractions, euro sign, lozenge, mathematical symbols, extra accented Latin letters, and superscript numeral figures. The family includes five font weights in two widths, normal and condensed, each with italics. Albert also added weights.FF DIN looks as if DIN had always had those weights because Albert didn’t let his ego interfere with the job." He did it so well that it looks exactly like the original, but much better, especially in smaller sizes. Spiekermann wrote in 2009 that "Albert’s brief was to take the regular weight and subtly make it a good typeface. It includes ranging (old style) figures and several refinements that allow it to perform better as a print and screen text face. While based on the DIN 1451 standard lettering, FF DIN has additional weights and a far wider character set. At a 1994 meeting of the Association Typographique Internationale trade association in San Francisco, Pool encountered Erik Spiekermann, who encouraged him to design a revival of DIN 1451 for release by FontFont, the type foundry Spiekermann had just established.