Here are icons that you can see in Par2 tab in program and brief explanation for each:
Par2 set is incomplete (not enough blocks)
Par2 set is incomplete, but there are enough recovery blocks to repair it.
Repairing of par2 set in progress
Repairing of par2 set failed (99% par2.exe did not found enough blocks, alt.binz is able to detect more blocks then par2.exe. Either download manualy few more blocks, or repair with quickpar. Check the log for reason why repair failed)
Par2 set is checked & ok
This icon means that par2 set is marked for future unraring.
Unraring of all rar sets from par2 set in progress.
All rar sets from par2 set successfully unrared.
At least one of rar sets from par2 set failed unraring (damaged archive, file already exists...)