This section describes how you customize the behavior and the appearance of the Sketcher. The following topics are covered:
“Overview of Sketcher customization options,” Section 19.9.1
“Displaying and hiding construction geometry,” Section 19.9.6
“Customizing the format and use of dimensions in the Sketcher,” Section 19.9.7
“Customizing the use of constraints in the Sketcher,” Section 19.9.8
“Managing images in the Sketcher background,” Section 19.9.9
Display the Sketcher customization options by clicking the options tool 
at the bottom of the Sketcher toolbox. For more information, see “How Sketcher customization options are initialized and saved,” Section 19.4.7.