red ink

Evidence

"The word Adama(i) is marked with two vocalic diacritics – kasra and fatḥa, the latter is written in red ink."

Remarks

Red ink is specifically used to distinguish the 'fatḥa' vocalic diacritic on the name 'Adama(i)' from other diacritics like the 'kasra' (p. 305). This practice is common in the Saharan and Sahelian manuscript traditions for clarifying phonetic nuances or grammatical marks in the text.