To: J3 J3/23-109r1 From: Van Snyder Subject: Support for Containers Date: 2023-January-29 During meeting 216 at Lawrence Berkeley Laboratory, 11-15 June 2018, it was decided that a revision of Fortran should include support to develop containers, rather than support for specific containers such as lists, trees, queues, .... Paper 23-109 describes a comprehensive scheme to define containers. It is posed as a technical specification. One is urged to read Clause 3 first, to understand the motivation for it, and study one use case.