immediate:
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always undraw cursor after sending updates, but do not mark region as modified.
add automatic tests (plasma?)
if preferredEncoding is set outside of libvncserver, don't override it.

later:
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selectbox: scroll bars
authentification schemes (secure vnc)
	IO function ptr exists; now explain how to tunnel and implement a
	client address restriction scheme.
using Hermes library for fast colour translations.
CORBA