Instructions provided describe how to disable fills when creating polygons in ArcMap during an edit session. In some situations it is advantageous to disable the default fill option, especially when digitizing polygons from imagery or tracing features. The shaded fill of the polygon can cause a loss of precision.
If the Editor toolbar is not displayed, enable it by clicking Customize > Toolbars > Editor.
Disable ‘Use symbolized feature during editing’ in the Editing Options properties.