AddVerticalLine ( boolean visible , Any text , CustomColor color , int stroke );    
Default values:
text: ""
            color: Color.RED
            stroke: Curve.SHORT_DASH
    
    
Description
Adds a vertical line with specified text.
Input parameters
| Parameter | Default value | Description | 
|---|---|---|
| visible | - | Defines condition upon which the line is displayed. | 
| text | " " | Defines text to be displayed next to the line. | 
| color | Color.RED | Defines color of the line. | 
| stroke | Curve.SHORT_DASH | Defines style of the line. Any of the Curve constants can be used for this parameter. | 
Example
input period = {WEEK, default MONTH};
AddVerticalLine((period == period.WEEK and GetWeek() <> GetWeek()[1]) or (period == period.MONTH and GetMonth() <> GetMonth()[1]), "", Color.ORANGE, curve.SHORT_DASH);
    
    
The code draws orange short-dashed vertical lines with a defined frequency.