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#1: Reference Lines are Represented by Solid Green Lines
Reference Planes are used in almost all families. Reference Lines are more rarely used and tend to be more mysterious.
Typically, reference planes are represented by a dashed green line and the reference lines with a solid green line, although the line style can be modified.
#2: Reference Lines Have Beginning and End Points
Reference planes have an infinite length.
Reference lines have a beginning and an end point.
You might think… Don’t reference planes have a length that can be modified in the family editor? Indeed, you can drag the extremities of a ref. plane to modify the visual length.
However, this is just a visual representation. The plane is actually infinite. You cannot align or place a dimension relative to the end points.
Things are different with reference lines. You can place a dimension between the beginning and end points. In this case, we place a dimension between a reference…