>>1002230Strap being the backstrap or "trigger". The last portion you cut with the tip of the bar. Basically you make a face cut, bore in from the side to remove almost all of the wood from the backcut and then finally cut the strap and let the tree fall.
Only applicable to trees that are definitely going to fall in a particular direction without any wedging.
Pic related, a heavy leaning tree I cut. The strap can be seen just right of the axe head. The final bit of wood ripped from the weight of the tree,