sharepoint sharepoint-2007

When should I use 'view' instead of 'read only' in SharePoint permissions?

I'm using SharePoint 2007 and I need to know when/where I should use the 'view' instead of 'read-only' for user permissions.

Solution

Here is a link to a default permission matrix.

Read level has only one more permission than View Only

So the users with read level can view the source of the aspx pages, but the users with view only permission can only view the result.