Read-only variables can be used to gather information about the current template, the user who is currently logged in, or other current settings. These variables are read-only and cannot be assigned a value.
Template-related read-only variables make it possible to create conditional content in a template based on the identity of the template. For details and a list of all template read-only variables, see "Template Read-Only Variables".
User-related read-only variables make it possible to gather information about the current user.
The following variable is set only as internal Content Server flags, so it can be retrieved but not set directly.