Nota Bene

take notice, mark well (Latin)

Nota Bene is a Latin phrase meaning "Note Well," coming from notâre—to note. It is in the singular imperative mood, instructing one individual to note well the matter at hand. (The pluralis form is notate bene.)In present day English, it is used to draw the attention of the reader to a certain (side) aspect or detail of the subject on hand, translating it as "pay attention" or "take notice". It is often written in the abbreviated form: N.B. Nota Bene is also the name of a suite of word-processing and related software, derived from XyWrite. It is marketed especially for scholarly (e.g. multilingual) purposes.
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Noun
1. a Latin phrase (or its abbreviation) used to indicate that special attention should be paid to something; "the margins of his book were generously supplied with pencilled NBs"
(synonym) NB, N.B.
(hypernym) note, annotation, notation

nota bene, mark well (Latin)

n. nota bene, take notice, mark well (Latin)