\\ block For This {}, or For object [, object2] { }, where object is a group, or a pointer to group, or an item from an array contains a group \\ This is "this context". For This { \\ any new definition here has a temporary use \\ can be nested, but if we use object then we can use dots to access members of it. If we use a second one then we have to use double dots (..x for second object, for access to x member) }