To get started with OpenLSEF, simply use following template files containing appropriate layering and block (cell) definitions. The OpenLSEF standard evolves over time as contributors refine and improve it. These improved versions are released in specific versions. This page contains links to prior versions of the OpenLSEF standard for reference and archival purposes. Note that you should always reference a particular version of OpenLSEF when providing or requesting deliverables.