Beta-2 Tabs in Article Parameters

Compared to 1.0, the tabs in 1.5 are much nicer: using Mootools, these are now sliding tabs with a nice animated effect. Look for some small differences in those article parameters... sure you'll discover them.
I'd like to refer to a post by Louis Landry here about precedence of parameter settings, as these are found in 3! different places for an article (that is, content component item):

it is supposed to work as follows

You setup the base component configuration. This is default behavior for the component in any scenario.

A menu item allows you to define a specific configuration for a component. This at its core is the most basic principle of what a menu item is. A specific configuration for a component. Because of this you are allowed to override the base component configuration.

The last step in the cascade of parameters is the specific data model for that request. In the case you are talking about that is the article parameters.

The idea is that an article can override anything that it needs to over even the menu item configuration. You will find that the ability to use global is still present at this level of configuration. This will revert to the menu item configuration for the component if an Itemid is given or the component configuration if no Itemid is given.

Original post here.