Sample texts from ECHO

(ECHO links for each potential problem to be included)

• ​Benedetti (1585, annotated)

handwritten annotations (cannot be typed in China)

• ​Euclid (1558, Latin)

Latin ligatures

• ​Euclid (1703, Latin/Greek?)

Greek ligatures

• ​QQTS (1627, Chinese; with ​xml)

• ​Hutton (1795, English encyclopedia; with ​xml)