Quick scan

[Echilis]

Hi all I am a new user of nod32 Antivirus software. I am using 4.2. I am wondering if there is an option for "quick scan". That is how to do a quick scan? I can not find it in the user interface.
Also can anyone explain what is mean by the following
1. Smart scan
2. In-depth scan
3. Context menu scan

[siljaline]

Please use your onboard help by pressing F1 to prompt the help menu or read the user guide.

Thank you.