As the above image shows, one can inspect most important attributes of an APEX node in the APEX network view: callback, name, Cd, tags and parameters.
Except properties. Where are they?
esttri
They are available via the right click menu. You will get a small dialogue to get and set them there.
stheo
Press 'P' for parameters.
edward
Editing tags do go into the "properties" attribute but in general, I think the properties are expected to be manipulated elsewhere right now since they're mainly used by the autorigging tools and APEX Configure Controls.
raincole
I'm 100% sure tags and properties are different things. They are two different attributes: