Opal Tracing 2.3 has an option to create "Eastman only" tracings. These have sufficient points to generate an Eastman analysis...

Opal Tracing 2.3 can optionally display tracings in a left-facing orientation...

Left-facing display of tracings works during surgical prediction too...

Opal Tracing 2.3 can save tracings in SVG (Scalable Vector Graphics) format...

Tracings saved in SVG format can be viewed in some web browsers, e.g. Firefox...

Tracings saved in SVG format can be edited using Inkscape and some other graphics editors...