Figure 6.
(Upper) A template and an array of entries viewed from the side. (Lower) The template of Fig. 4 is covered partly by a layer of tiles.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.