Anti skating what does this term mean

Skating is when the stylus slides across the record's surface and doesn't stay in the grooves. This can happen when the stylus is too worn and so any control to correct it called "Anti Skating" won't work. Getting the pressure right to the stylus is the first thing to do. Once this is set up if an odd record then skips a few grooves on a good condition record, you can adjust the Anti skate control to prevent it. Adjustment it is like setting the stylus pressure, a question of trial and error.