Drawing Mode Alignment

To help draw objects in a plan view, the program infers a linear geometric alignment between the position of your mouse cursor and previously drawn columns. This inference is visible as dashed lines that are always parallel to the axes of the current coordinate system as shown in the drop-down list in the lower right-hand corner of the program. This inference works only with Cartesian coordinate systems, including User Coordinate Systems (UCS), and will not work with cylindrical systems. The type of inference depends upon the object being drawn:

See also

Draw menu > Snap Options