To Align the Reference Line of a Taper/Slope Symbol to the Baseline (AutoCAD Mechanical)
In the drawing area, double-click the symbol to edit.
Click the Leader and Text tab.
Click the Adjust button. The dialog box hides.
Shift+Right-click the drawing area. AutoCAD Mechanical displays a menu.
Click Parallel.
Move the pointer over the baseline until you see the parallel icon.
Move the pointer to the approximate position you intend to place the symbol. AutoCAD Mechanical displays a dotted guide line that is parallel to the baseline.
Click the guide line. AutoCAD Mechanical displays the dialog box again.