What is the purpose of _this_ forestay?!
I have a sloop rig. It has a forestay installed which I am tempted to call an "adjustable baby forestay". The bottom end is shackled to a traveler car on a short fore-aft track located on the cabin sole just aft of the foreward hatch. The upper end is attached to the mast at an estimated 2/3 (possibly more) mast total height.
What would this set-up be called? What is the purpose of this adjustment?