or 
to place a line/polyline on the screen. If you double-click the placed [Line] or [Polyline], the following dialog box will appear.Drag the mouse to draw a line from the start to the end. For the polyline, click to designate the start, each change of direction and the end, and right-click to set.
From the [Draw (D)] menu, select [Line (L)] or [Polyline (U)], or click or to place a line/polyline on the screen. If you double-click the placed [Line] or [Polyline], the following dialog box will appear.
If you press and hold the [Shift] key while placing a line, you can draw a line at an angle of 0 degrees and 90 degrees.
If you place a line while pressing the [Ctrl] key, you can draw a line extending from the center. If you place a line while pressing the [Ctrl] and [Shift] keys at the same time, you can draw a line of 0 degrees or 90 degrees extending from the center.
To edit after placing the line and polyline, click on the selected line to change to a yellow handle. You can drag the line to change the shape.
For a polyline, you can left click and drag to draw, similar to handwriting.
Line Type
Select the line type from [Solid Line], [Dotted Line], [Dash Line], [Chain Line], or [Two-Dot Chain Line].
Line Thickness
Set the line thickness within the range of one to nine dots.
When line types other than [Solid Line] are selected in [Line Type], the setting range is one to two dots.
Arrow Shape
Select the arrow shape from 
,
,
,
or 
.
Display Color
Set the line color.
Pattern Color
Select the pattern color. This function can be used only when line types other than [Solid Line] are selected in [Line Type].
Blink
Select the blink and blink speed. You can choose different blink settings for the [Display Color] and [Pattern Color].
There are cases where you can or cannot set Blink depending on the Display Unit and [Display] tab's [Display Settings] area.
8.5.1 Setting Colors