The overuse of acronyms has long frustrated the U.S. Court of Appeals for the D.C. Circuit (or, we should say, the United States Court of Appeals for the District of Columbia Circuit.) On Tuesday, the court clerk’s office sent a letter to lawyers in a campaign finance case warning them to limit acronyms and “avoid using acronyms that are not widely known.”

The clerk’s office found “numerous acronyms and other abbreviations” in recently filed briefs, according to the letter. The parties were asked to “reexamine” the documents they had filed to make sure they complied with court policy. The Hispanic Leadership Fund and Center for Individual Freedom are appealing a federal district judge’s ruling striking down Federal Election Commission regulations that narrowed disclosure requirements for certain political contributions. Rep. Chris Van Hollen, D-Maryland, brought the lawsuit challenging the regulation.