17 CFR § 232.310
Marking changed material
April 15, 2021
Provisions requiring the marking of changed materials are satisfied in ASCII and HTML documents by inserting the tag <R>before and the tag </R>following a paragraph containing changed material. HTML documents may be marked to show changed materials within paragraphs. Financial statements and notes thereto need not be marked for changed material.
[64 FR 27896, May 21, 1999]