 TM 10-1670-287-23&P  0014 00  6.  Find center tab on trailing edge. This tab indicates center of canopy. Fold half of folded tail back.  7.  Gather and count the ten control lines and the two groups of eight each A and B and C and D lines. Situate them neatly in the center of the canopy.  8.  Keep tab in center of canopy. Check that control lines are taut and in the center of canopy. Spread  center of tail one full section left and right of center tail.  Center Tab  Tab Control  Lines  Change 2  0014 00-24 