Description:

The THICKLINES property lets you enable thick lines for line, lin/log, log/lin, log/log, polar, high-low-close, and open-high-low-close graphs. By default, thick lines are three pixels thick. Thin lines (THICKLINES set to off) are one pixel thick.
For line, logarithmic, and polar graphs, you can use the PatternData property to override the default of three pixels and set your own line thickness. For high-low-close and open-high-low-close graphs, you can't change the thickness of three pixels (unless you set THICKLINES to off, in which case the thickness is one pixel).
The THICKLINES property is mutually exclusive with the PatternedLines property. When you set one of these properties to on (1), the other is automatically set to off (0).

None.