What do the different scan type do?

[PCMonk]

There are different scan types, in-depth, context and smart. Could anyone explain what the differences are in detail and in what situation they should be used?

Also could someone explain how the scan profiles work when a scan is scheduled from the RA Console in a policy? There is a user-defined (defined where?), current profile, my profile and then the in-depth, context and smart scan options. This is a bit confusing to me.

Thanks.

[Cudni]

see possibly
http://www.wilderssecurity.com/showthread.php?t=253821
and in-depth would enable all of Eset detection abilities
http://kb.eset.com/esetkb/index?page=content&id=SOLN91