add features to zigzag:
1. zigzag repaints, add breadcrumbs to track. use standard user selectable line types, colors, etc;
2. automatically draw extending connecting lines from LH to HH and from LL to HL , use standard user selectable line types, colors, etc, allow user to control each line class xH, xL the number of lines to retain.
See green and blue lines on screen shot enclosed
Furnish source code and tested Sierra custom study dll ready to go.
More details as per discussion