Siebel Portal Framework Guide > Integrating External Content > Understanding Portal Agents >
With a symbolic URL disposition type of Inline, the Siebel Server receives content sent by an external application. It combines the external content with Siebel-produced content and composes a single HTML page, which it then sends to the client browser for display to the user. Optionally, links in the aggregated content are rewritten so they reference the Siebel Server (proxy), rather than referencing the external application server directly. This allows the Siebel Server to handle links in the aggregated content in such a way that it appears to the user as one integrated application rather than from different application servers.
The inline disposition type supports Session Management. The Siebel Server uses Session Management to manage session cookies and automatically relogin to an external application after a time out occurs.