There are two types of variables that control the behavior of gCADPlus - Drawing Parameters and Global Parameters. Both can be accessed via the Tools drop down menu. As the names imply, changes to drawing parameters affect only the particular drawing, while changes to Global Parameters stay with gCADPlus and are operational each time you run the program.
Changing Global Parameters
Alter Global Parameters by selecting Tools > Global Parameters. This 'pops up' the dialog box shown below. The figure below shows the dialog box used to control Object Snap behavior of gCADPlus.
You might reach this dialog box and wish to change the color of the snap marker.
Other dialog boxes
Window and Cursor
Here it is possible to alter the behavior of the system cursor while you are working with gCADPlus, the display of crosshair, change crosshair size and control whether or not the cursor displays command prompts during editing operations.
Here we have changes the color of a selected entity from magenta to red.
The ease with which you can rotate an entity in a gCADPlus drawing is influenced by the Global Parameter Grips.
Charging Drawing Parameters