cursors with vendor prefixes dont work

[MulletBoy]

The vendor specific cursors below dont work un-prefixed with prefixfree

works:
div {
cursor: -webkit-grab;
cursor: -moz-grab;
}

does not work:
div {
cursor: grab;
}

[LeaVerou]

The prefixed zoom-in and zoom-out cursors work though, so it's just a matter of adding the grab cursor in the list of values. Is it standard or proprietary?

[mkantor]

See #43.