The other guideance is correct in that it could be built to use on the forestay or an inner forestay. Measuring it should allow you to decide yourself what it is for.
Such high cut sails
are often termed 'yankee' sails in europe
. I believe the term comes from such a cut being typically used on early US sailboats who needed such a high cut to prevent them being damaged by heavy seas taken over the foredeck in big seas experienced off the US east coast
On the other hand, Genoas, the normal term for overlapping deck sweeping style sails, is said to have its name based on similar cut sails orginally seen in the relatively windless seas off the Italian port of same name.
I've no idea if a Gib (or Jib) foresail sees its name orginate from styles used areas around Gibraltar
. But suspect others on the site with more knowledge than I can give more guidance.