Drug Control Act; adds certain chemicals to Schedule I, penalties.

The document layout was changed from a single-column format to a two-column format to fit the House Substitute style.

The document structure was changed from a finalized 'Enrolled' version to a 'Substitute' version, adding committee headers, line numbers, and page breaks.

Text wrapping and line breaks were adjusted throughout the list of chemical names, which may affect readability but does not alter the legal substance of the bill.

Standard enrolled act headers (e.g., 'VIRGINIA ACTS OF ASSEMBLY') were removed and replaced with substitute-specific formatting.

The document was updated from a draft 'Introduced' version to a final 'Enrolled' version, adding official state assembly headers, chapter titles, and approval stamps.

Minor formatting adjustments were made to the text layout, such as adding line breaks and adjusting indentation, but no substantive policy text was added or removed.