Home Applications Siebel Siebel CRM Oracle Siebel CRM: Guides updated in Release 26.5 CRM Web Services Reference HTML PDF Describes Siebel Correspondence, Proposals, and Presentations, which lets salespeople create proposals and presentations and leverage literature, such as sales brochures and white papers. Pricing Administration Guide HTML PDF Describes Siebel Pricing Administration. REST API Guide HTML PDF Describes Siebel REST APIs. Siebel Fundamentals Guide HTML PDF This guide provides an overview of Siebel fundamentals.