The List Key Definitions routine returns, one at a time, the
    definitions (equivalence strings) associated with specified keys
    in a specified key definition table.

    Format

      SMG$LIST_KEY_DEFS  key-table-id ,context [,key-name]

                         [,if-state] [,attributes]

                         [,equivalence-string] [,state-string]

  Additional Information (explode) :

• Returns
• Arguments