To Change General Settings for Line, Circle, Arc, and Polyline Tools

1. Click Raster menu Options. The Raster Design Options dialog box is displayed.
2. Click the VTools General tab.
3. In the Removal Method section, click one of the following settings:
   • None does not delete the raster as you trace it.
   • Rub automatically rubs the underlying raster. This setting uses the Rub/ Crop Line Width setting to determine the width of the raster it rubs. For more information, see Rub and Crop Line Width.
   • REM deletes the underlying raster. However, unlike the Rub setting, this option recognizes raster line width and leaves raster intersections intact.
   Note: The 3D Polyline Follower always uses the None option.
4. If you want the line, polyline, and arc tools to stop at vector intersections during one-pick selection, then in the Line, Circle, Arc and Polyline Settings section, select Stop at Vector Intersection. This is useful if much of a drawing has been vectorized and the vectorization tools can depend on increasing amounts of vector data to make stopping decisions.
5. If you want the line and polyline tools to display a glyph that specifies the start point, select Display Start Point Glyph.
6. In the Verification List section, select the type of values to appear in the verification list:
   • Most Recently Used
   • Most Frequently Used
7. Specify the number of values to include in the verification list in the Length box.
8. If you want SmartCorrect to respect current AutoCAD drafting settings such as OSNAP, ORTHO, and POLAR, then in the SmartCorrect Settings section select Respect Drafting Settings.
9. In the Correction Tolerance section, select one of the following options:
   • AutoCAD APERTURE uses the aperture settings from the Drafting tab of the AutoCAD Options dialog box to determine how far (in screen pixels) the resulting vector is allowed to shift in an attempt to respect AutoCAD drafting settings.
   • AutoCAD Units allows you specify how far (in AutoCAD units) the resulting vector is allowed to shift in an attempt to respect AutoCAD drafting settings. If you select this option, enter the number of units in the text box.
10. If you want AutoCAD Raster Design toolset to round the values for vector entities created using one-pick selection, select Round Values. Rounding applies to the length and angle values for lines and polylines, and to the radius value for arcs and circles.
11. If Round Values is selected, select one of the following rounding options:
    • AutoCAD Precision (LUPREC/AUPREC) uses the precision value set in the Drawing Units dialog box.
    • Specified Precision uses the precision values you set in the associated Length and Angle text boxes. Specified Precision rounds to a multiple of the value you entered. For instance, if you specified a length precision of .03, AutoCAD Raster Design toolset might round a line to 12.03, 12.06, 12.09, and so on.
12. Click OK to exit the dialog box.