• Check basic LCSH-style subdivision separator and capitalization conventions and count subdivisions after the main heading.
• Apply the same explicit rule consistently during ingest, quality control, reporting, or preservation planning.
• Expose records that need human review without silently rewriting the source data.

The main heading is not a subdivision; A--B--C therefore contains two subdivisions.

• This is a string-style check, not Library of Congress authority validation; it cannot confirm authorized headings, subdivision order, punctuation rules, or MARC coding.
• Preserve the original value and record the rule version when using this result in an archival workflow.

• Authority Control Name Form Normalizer (surname first)

  Use Authority Control Name Form Normalizer (surname first) to heuristically invert a personal name into surname-first form while retaining contiguous common surname particles. Choose this tool when you need to check basic LCSH-style subdivision separator and capitalization conventions and count subdivisions after the main heading.

• Sentence Case Converter

  Use Sentence Case Converter to lowercase text and capitalize the first letter of each sentence ending with a period, exclamation mark or question mark. Choose this tool when you need to check basic LCSH-style subdivision separator and capitalization conventions and count subdivisions after the main heading.