The size of a geometric element's graphic handle is defined by the symbol size parameter within a coordinate system at the origin of a model (including the baseCS). The default symbol size parameter value of all origin coordinate systems is 1.0. When zooming out to navigate a large model, the handles of points may become too small to manipulate. To increase the symbol size of all elements within an origin coordinate system, increase the symbol size value. To decrease the size, decrease the symbol size value.

While developing a very large model, it may be useful to link the symbol size value of a given coordinate system to a graph controller that can be adjusted dynamically. This allows you to expand the graphic handles when necessary and shrink them when not in use.