2012

Visibility Set Adds a visibility parameter to the dynamic block definition and
allows visibility states to be defined. No action is necessary with the visibility
parameter.
Lookup Set Automatically adds a lookup action associated with the lookup
parameter.
Constraints Tab (Block Authoring Palettes Window)
Provides tools for applying geometric constraints and constraint parameters
to objects. When you apply geometric constraint to a pair of objects, the order
in which the objects are selected and the point on which each object is selected
can affect how the objects are positioned relative to each other.
Geometric Constraints
Coincident Constraint (
GCCOINCIDENT on page 835) Constrains two points
together or a point to a curve (or an extension of a curve).
Perpendicular Constraint (GCPERPENDICULAR on page 844) Causes selected
lines to lie 90 degrees to one another.
Parallel Constraint (GCPARALLEL on page 843) Causes selected lines to lie
parallel to each other.
Tangent Constraint (
GCTANGENT on page 848) Constrains two curves to
maintain a point of tangency to each other or their extensions.
Horizontal Constraint (GCHORIZONTAL on page 841) Causes lines or pairs
of points to lie parallel to the X axis of the current coordinate system.
Vertical Constraint (GCVERTICAL on page 849) Causes lines or pairs of points
to lie parallel to the Y axis of the current coordinate system.
Colinear Constraint (GCCOLLINEAR on page 837) Causes two or more line
segments to lie along the same line.
Concentric Constraint (GCCONCENTRIC on page 838) Constrains two arcs,
circles, or ellipses to the same center point.
Smooth Constraint (GCSMOOTH on page 845) Constrains a spline to be
contiguous and maintain G2 continuity with another spline, line, arc, or
polyline.
Symmetric Constraint (
GCSYMMETRIC on page 846) Causes selected objects
to become symmetrically constrained about a selected line.
Equal Constraint (GCEQUAL on page 839) Resizes selected arcs and circles
to the same radius, or selected lines to the same length.
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