Line
Select the “Line”
command in Draw menu or left-click the line button 
in the toolbar; move the mouse in the
screen editing window, and it will become a cross; click on the mouse in the
view (i.e. screen), then a line is added.
After the above
steps, the transparency of the line, the line type, width, color, the arrow and
shape of end will be set by default while engineers can modify these properties
in order to meet the needs of projects. Double click over a straight line, or
click on the Property button
in the toolbar
after selecting it. Line Property dialog box will pop up, as shown in Figure
4-24:
Figure 4-24 Line Property dialog box
SKTOOL configuration software provides up to 6 straight line types, 30 kinds of line width, and 6 straight-line end arrows, with the ability to adjust the properties using the pull-down and trimming buttons. To change the length, direction, and position of the line, select the line first, then move the mouse to the end of the line; after that hold the left button of the mouse, and drag the mouse to the right position to release the left button.
Dynamic Color
The color of border can be changed by modifying the values of the corresponding registers. You need to check the corresponding option to enable the dynamic color function.
l Data Type: Set the data type of the register.
l Control Address: Set the address of the register that controls color changes.
l Color Configuration: Multiple values and their corresponding colors can be configured. When the value of the register corresponding to the control address matches one of the configured values, the corresponding color will be displayed. (If the register value does not match any of the configured values, the color set in the configuration will be displayed.)