Entity Snap Precision
Toolbar: Settings > Entity Snap Precision ()
Menu: Settings > Entity Snap Precision
Sets the selection area for snapping to entities.
Selection area for entity snap (1 - 50 pixels) <value>: Enter a value between 1 and 50 for the size of the aperture cursor. Choosing a larger value makes it easier to select an entity, but you may select more entities than you intend. Choosing a smaller value selects fewer entities, but you may find it difficult to select a single entity. Press Enter to accept the default value.
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Apparent Intersection Snap
Clear Entity Snaps
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Insertion Point Snaps