|Deletions are marked like this.||Additions are marked like this.|
|Line 4:||Line 4:|
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Among surveyors, a bench mark is a specific type of control point that is used strictly for elevation, or ["vertical control"].
Among geocachers, the term ["benchmark"] is used casually to mean any kind of survey marker, either vertical or ["horizontal control"]. In this casual use, the term is generally spelled as one word; benchmark.