If you meant something else — like a story about version history of Acrobat Pro, or a user manual section — please clarify and I’ll adjust the answer.
Common issues with indexing in Acrobat Pro include:
The feature in Adobe Acrobat Pro is primarily a powerful search tool designed to accelerate word searches in large documents or collections. Unlike a visual index or Table of Contents, this index is a hidden digital catalog of every word in a file, allowing Acrobat to find terms 10 to 20 times faster than a standard scan. 1. Types of PDF Indexes
Practical tip: Use redaction, not simple erasure or overlay, to ensure sensitive data is unrecoverable.
: You can embed an index directly into a single PDF file. This index travels with the document, allowing any Acrobat user to benefit from rapid searching without needing external files.
Choose to index multiple files or Manage Embedded Index for a single document.