confuse about the getk,getq command

[jacky]

Hi all:
    I have just installed the latest version 1.4.0, and I read the doc/
protocol-binary.xml. There are some new command like getk, getq, setq
and so on.
I'm not sure how can I use these commands. Can I  use them in ascii
protocol? Or they are only used in binary protocol?
And another question, How can I use the binary protocol.  Telnet the
server  is using ascii protocol right? Is there any document
introducing this topic?
Hopefully I describe the question clear.