Command: Ycen

Function: Draw the center line, greater than or equal to the diameter,

Location: 1. POP menu YSup -> Center line
          2. Toolbar Y_Line -> Center line

Enter End/F Filter/L Trans Layer/ Trans Color<2>/? Help/Select Object:

 1 Enter End - End Ycen command (right click)

 2 F Filter - Find items that meet the object and draw the center line

 3 L Trans Layer - set each person like working conditions
       Set the layer of the center line, if the layer name is blank (""), 
       the layer name depends on the layer of the object.

 4 Trans Color <n> - Set the center line color, n = 1 ~ 256

 5 ? Help - Function Operating Instructions

 6 Select Object - circle, arc, oval, draw the center line, 
           the line must be selected two (rectangular), to draw the center line

Similar instructions: Yscen,  Draw the mind line, less than the diameter
Location: 1. POP menu YSup -> Mind line
          2. Toolbar Y_Line -> Mind line