Williams Percent R - WILLR

Parameters:
- Color - WILLR color
- Line Type - WILLR line type
- Label - The text to identify the WILLR plot
- Period - WILLR period
Description:
The value is graphed on a 0 to -100 scale (historically Williams
Percent R was graphed on a scale from 0 to 100 with 0 at the top and
100 at the bottom.)