https://twitter.com/End0rphinRush/status/1204859875383271424
common substitutes to work around OCR errors..
https://twitter.com/stormypatriot21/status/1204849843262373889
On page 294 of the Redacted version of the IG report.
[sic] sic marks a spelling or grammatical error. It means that the text was quoted verbatim, and the mistake it marks appears in the source.
[sic] sic is used to point out a grammatical error, misspelling, misstatement of fact, or the unconventional spelling of a name.