[Harp-L] tab question

["Doug H" <dough.harpl@xxxxxxxxx>]

I do not typically use tab but now want to write out some melodies including chords, double stops, and possibly some pairs separated with a tongue block, such as octaves.  However the tab that I have seen did not include any double stops or octaves.  

If anyone can point me to any online examples or describe the system that they prefer, it would be much appreciated.  

Thanks in advance,

Doug H