Establish a new set of variables available to be accessed within the tag contents.
<core:dataspace>
contents
</core:dataspace>
CoreDataSpaceTag is a ServerComponentTag that creates a ?DataSpaceComponent.
This tag provides a new scope for variables within the template.
{$somevar} is locally scoped to it’s containing block {^somevar} is scoped to the parent block {#somevar} is scoped to the template (global scope)