lxpanel: setdocktype options

[Hitesh Shah]

LXDE documentation (http://wiki.lxde.org/en/LXPanel) has this line:
setdocktype=1 # ask the window manager to treat the panel as a dock.

Where can I find Lubuntu-specific information on the options for
setdocktype?
The line above has setdocktype=1. So is there a setdocktype=0, or a
setdocktype=2, etc?
I will be grateful if someone can point me to where more details on this
can be found.
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