The tab has a size no greater than the tab void area and no greater than the tab receptacle.

An outer tongue is coupled to at least one of the inner tongue and the housing member.

The positioning tab has slots which secure the easel in a display position as the positioning tab is rotated onto a tab rib in a tab insert in the other support member.

The locking tab (14) has a leading main portion (18) and an anchoring tab (20).

In another embodiment, the right wall includes at least one opening and the left wall includes a middle segment extending towards the opening of the right wall.

The tongue (38) is locked with means co-acting between the tongue (38) and the spine (16).

A lift end (32) of the tab is opposite the tab nose.

The tongue (13) has an outer surface (16) complementary to the inner surface (17) of the tongue (14).

When the flap extension is pulled by the user, the flap is caused to unfold and unseal the exit structure.

A pull strip may be used to remove the barrier, and at least one reinforcing strip may be used to guide the pull strip.

The proof mass assembly includes a reed (72) suspended from a support (70), and a reed capacitor plate positioned on the reed.

A retaining flap engaging the secondary locking tab prevents the locking tab from moving out of engagement with the retaining tab.

The port has a thin lip (19) which can be aligned with the lip (10) of the lid.

Next, the first anterior tab may fully self-expand before the posterior tab fully self-expands.

The tab (104) includes three walls.