per Benno Schulenberg's patch (with a few tweaks by me), add a new

per Benno Schulenberg's patch (with a few tweaks by me), add a new
section 4.5, and move all section 4 entries after it down one number, to
explain a problem that can occur when holding down keys to generate Meta
sequences; also add a few more capitalization and wording fixes

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3482 35c25a1d-7b9e-4130-9fde-d3aeb78583b8