cancelled entries?

In the General Indexing Guidelines (which are given in the Project Instructions of most projects) it says:

When information was crossed out, corrected, canceled, or marked void, follow the instructions for “crossed out” that match the situation.

• When information was crossed out and then replaced, type the new information in the appropriate fields.
• When information was crossed out, was not replaced, and can be read, type the crossed-out information.
• When information was crossed out, was not replaced, and cannot be read, mark the field as unreadable by pressing Ctrl+U, or on the indexing toolbar, click the
•  icon.