% (between double letters) indicates a line break in the original
= lines added to the Caligula ms
* lines added to the Caligula ms that have no relationship to Otho
+ indicate missing letters. Each plus sign indicates one missing letter, (the number of spaces indicate the extent of damage and hence the reliability of this count)
(( ... )) enclose interlinear or marginal additions in the mss
[ ... ] enclose supplied editorial readings (note that footnotes are not included)
( ... ) enclose readings no longer legible but derived from Madden's edition (1847)