2.1 Syntax of section

$\{$ (begin of section)
$domain/role$ (declare domain or role, one domain or role can be declared in one section)
$users$ (This can be used only for role)
$domain\_trans$|$program$ (Configure domain transition)
$allow/deny$|$allowxx$ (Describe access control for files, access control for resources other than file)
$\}$ (end of section)