Multiple Tabs within a single tab block

[buzcarter]

Support:

{start_of_tab}
A----------------------------------------------0----------0---2---2--|
E---0-------0---2-------0---2---3------2---3----------3--------------|
C-------3------------------------------------------------------------|
G--------------------------------------------------------------------|

A----------2---0-----------------------------------------------------|
E---0--------------3---2---0-----------
C-----------------------------------------
G---------------
{end_of_tab}