1. (noun) a comment or instruction (usually added)

• notation
• note

2. (noun) the act of adding notes

• annotating

1. (noun) a comment or instruction (usually added)

• acknowledgment
• citation
• cite
• credit
• mention
• quotation
• reference
• footer
• footnote
• n.b.
• nb
• nota bene
• poste restante
• postscript
• ps

1. (noun) a comment or instruction (usually added)

• comment
• commentary

2. (noun) the act of adding notes

• expanding upon
• expansion

1. (noun) a comment or instruction (usually added)

• annotate
• comment
• gloss
• annotate
• annotate
• footnote
• footnote
• mention
• note
• observe
• remark
• note
• take down

2. (noun) the act of adding notes

• annotate
• footnote