class type chain_file = object ... endval chain_file : org_from:[< genome ] ‑> org_to:[< genome ] ‑> chain_file Bistro.Std.workflowval bed : org_from:[< genome ] ‑> org_to:[< genome ] ‑> Bistro_bioinfo.Defs.#bed3 as a Bistro.Std.workflow ‑> [ `ucsc_lift_over of 'a ] Bistro.Std.directory Bistro.Std.workflowval mapped : ([ `ucsc_lift_over of 'a ], 'a) Bistro.Std.selectorval unmapped : ([ `ucsc_lift_over of 'a ], 'a) Bistro.Std.selector