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From SofTutor for MicroStation 2D - Snaps
Topics & Keywords covered in this video are:

Snaps - Bisector Draw Element Center Point Line Square
Snaps - Tangent From Draw Element Key Circle Point Line
Snaps - Tangent Draw Element Circle Point Line
Snaps - Perpendicular From Draw Element Circle Point Line
Snaps - Origin Draw Element Key Point Line Circle Cell
Snaps - Near Draw Element Close Line
Snaps - Midpoint Draw Element Degree Line Circle Half
Snaps - Key Point Vertices End Mid Divide Center Locks
Snaps - Center Draw Element Key Point Line Circle Shape
Snaps Draw Element Center Point Line Square
Snaps - Thru Point Draw Element Point Line Intersect
Snaps - Point On Draw Element Line Circle Place Move Along
Snaps - Intersection Draw Element Center Point Line Implied
Snaps - Perpendicular Draw Element Circle Point Line