Turns the buffer into a "handwritten" document.
The functions `handwrite-10pt', `handwrite-11pt', `handwrite-12pt'
and `handwrite-13pt' set up for various sizes of output.
Variables: `handwrite-linespace' (default 12)
`handwrite-fontsize' (default 11)
`handwrite-numlines' (default 60)
`handwrite-pagenumbering' (default nil)
(fn)