Use of Getter - Setter methods in Web UI

Hi,

Can anyone tell me the use of setter/getter methods in the BSP workbench?

I see a list of them as soon as we create a context node...Get, Get_I, Get_M, Get_P,Get_V...etc.

Why do have so many get methods? Use of them separately?

Kindly help.

Thanks & Regards,

Joseph.