The soundsource combinations table now has a "use" boolean for enabling/disabling the combination during tracking.

Added a new column to the tracking parameter panel ReferencePositionEnd. Adjusted the tracking algorithms accordingly.

Added first version of the new backward tracking method. It is now possible to use interpolation methods as well.

Bugfix, Plotting the soundsource line segments used a wrong algorithm to estimate the already processed combinations.

The soundsource combination panel now shows the segment color as background if the "Update track parameter" is enabled in trajectory output.

Bugfix, if the zoomed area does not contain any topographical lines, it will now produce a warning instead of an error.

The etopo file must be downloaded separately and linked as parameter
etopo in the files section in artoa.ini file.