Global average is displayed user plots, depending on file format

[pvstodghill]

Recently, we have noticed that whether or not the global average is displayed with user plots depends on the file format of the plot data. In particular, global averages are displayed for data that is formatted using, for want of better terminology, format number 1 described in the user manual ("one line per base and one or more columns of...") and is not displayed with format number 3 ("indexed tab delimited file").

We aren't sure whether this is a bug or an undocumented restriction.

We can provide sample data and or screenshots, if that would be helpful.

Thanks for all of your great work!