"notations" in the noun sense
1. notation, notational system
a technical system of symbols used to represent special things
2. note, annotation, notation
a comment or instruction (usually added
"his notes were appended at the end of the article"
"he added a short notation to the address on the envelope"
the activity of representing something by a special system of marks or characters
Source: WordNet® (An amazing lexical database of English)
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