But this supposition depends on a merely conjectural emendation of the text. Conjectural emendation must be clearly indicated in the critical apparatus or in the text itself. Nicholas Evans considers the hypothesis of later Frankish emendation unwarranted. Textology is mainly about organization, emendation, exegesis and collection of ancient works. The spelling ""Dinopis"" is also found, but is regarded as an "unjustified emendation". A catalyst was the textual emendation and translation into Latin of Diophantus' "Arithmetica". Correction and emendation would be held in the same esteem as copying itself. Sometimes a crux will not require emendation, but simply present a knotty problem of comprehension. This title followed the cartouche as an emendation of the birth name. Semerkhet's predecessor, Anedjib, had introduced the "nbwj" name as a heraldic emendation. An emendation from "died in 590", to "died aged 90" would resolve this inconsistency. The name Ardotalia is a hypothetical emendation of Zerdotalia written in the Ravenna Cosmography. However, the emendation is not universally accepted. Though, Atia may have been the emendation of "Appia". However, this is not a valid emendation.