The plugin, “transforms/tester” allows exploring of the Transformations Registry interactively.  Includes v1 to v4’s PWD (with EU country date transforms) and SEC transforms.

To install, help->manage plugins->select  “transforms/tester”.  For SEC also select EdgarRenderer (or transforms/SEC).

Open from tools menu:

Select registry, transform, and enter source text to transform. Result (or error description) provided (errors also appear in messages pane).