The cable attaching the two calipers has a lead round attached to one end, the cable slots through the top of the caliper and the shot anchors it. Very similar to cabling a brake leaver.

O.k for flatland- but usually upgraded. I had a anchor attached to the crown of my fork to slot the cable\ base of pull. This greatly increased the stability of front braking compared to headset or stem mounted router\ pull anchor.

To release, grab the caliper>push to the wheel\ grab the cable> pull towards you\ slip the lead outta the hole.

Red Koolstops (less carbon) helped to get some rear immediate lock with braking.

If you consider- perhaps a just V-front for the added power.