CALL PDAS
DELETE ALL STRUCTURES deletes all structures from the centralized structure store (CSS). All the structure identifiers and all the structure elements are destroyed with the exception of the open structure. If a structure is open, it is replaced by an empty structure.
All the structures posted to the workstations are unposted.
open structure, empty structure, delete element, delete element range, delete element between labels, delete structure network, delete structure, unpost structure