With the Smart Points constraint option, the SmartCursor remembers points on objects previously snapped to. A small box is drawn around the smart point to show where it is. The SmartCursor remembers up to eight object points, and then the oldest points are replaced. To set a smart point, move the cursor over an object point while performing any operation. When an Object cue is shown, the SmartCursor has memorized the point.
Once a smart point has been defined, new points aligned to them horizontally, vertically, or perpendicular to angled lines can be located using extension lines.
A special smart point, called a Datum, can be set to temporarily replace the origin of the drawing for measuring purposes. When a datum is set, all measurements along the X and Y axis are taken from that point, rather than the drawing’s origin, until the datum is moved or deactivated. The Datum is shown as a small circle around the chosen point.
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Select to create an extension line when the SmartCursor finds a point near the cursor which aligns horizontally or vertically with a smart point
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Select to create an extension line when the SmartCursor is aligned to a particular angle from a nearby smart point
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Select to use a floating datum to define the origin of the drawing; a datum can be set holding the cursor over the desired point for a few seconds, or by pressing the G key when over the desired point
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Select to set an offset from the datum that is defined by an extension circle; enter the offset value in the edit box
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2.
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Click OK to set the Smart Point options.
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