#1 1/4 Invert The Column as Other 6 1/2 Circulate and
New #1 U-Turn Back by turning away from the center of the Column
(this is Invert The 1/4 Tag); Extend to the given fractional
tag position. If no fraction is given, complete a full Tag The Line.
Comments and Examples:
Invert The 1/2 Tag is the same as 1/2 Invert The Column;
Invert The 3/4 Tag is the same as 1/2 Invert The Column + Extend.