Single or Multi Schengen visa??

[Terpe]

Hi guys, am so confused about this single and multi- Schengen visa? Can anyone explain to me the difference of the two? I am planning to go Austria this October and will be staying for a week then another week in Switzerland for tour purposes and meeting the parents of my bf. I am from Cebu.

Please help...

Many thanks,
An

Single entry mean enter once only. Sort of one use only.
Multiple entry is, well more than one entry. A number of entries depending upon the validity and and conditions of the visa.

Your choice.