Edit and delete portion upto and including the $$$$$$$$$$

See http://stanxterm.aecom.yu.edu/wiki/index.php?page=Web_serving_-_access_control to learn more

Change IP addresses to restrict to
Specify location of the password file
Specify user name
Specify files (can be in subfolders)

$$$$$$$$$$$
<FilesMatch "(admin|internal_table_manager|index_long|index_short|install|cell-lines|chemicals|plasmids|proteins|records).php">
AuthType Basic
AuthName "Restricted access"
AuthUserFile /Library/WebServer/Documents/.htpassword
Require user psassb
order deny,allow
deny from all
allow from 129.98.50.211 129.98.50.118 129.98.51.136
Satisfy any
</FilesMatch>