You may also be interested in tools that can extract decision tables from existing Cobol code. One such is analyze:R intranet from ReGenisys, which produces decision vectors similar (but not identical) to the tables used by Cope.
This example shows how a table extracted by analyze:R can be expressed more concisely using Cope's extended-entry notation.
The other tool is the KLIS Reengineering Feature, which generates tables suitable for SILK.