Looks well-done. If possible, Id love to be able to extend it with a custom set of non-js-syntax commands for the current document. If also possible, Id love to

Looks well-done. If possible, Id love to be able to extend it with a custom set of non-js-syntax commands for the current document. If also possible, Id love to embed it in the document-- independent of mozilla. Id help with a fork if you think that could work.