.wpd File — WordPerfect Document

WPD is the document format used by Corel WordPerfect, a word processor that was the dominant PC word processing software through the late 1980s and early 1990s before being overtaken by Microsoft Word. WordPerfect uses a stream-based format with paired codes that mark the beginning and end of formatting attributes, conceptually similar to HTML tags but in a binary encoding. The 'Reveal Codes' feature that shows these paired codes remains one of WordPerfect's most praised features for precise formatting control. WPD files support advanced legal document features including table of authorities, redlining, document comparison, and the Bates numbering system used in legal discovery. WordPerfect remains popular in law firms and legal departments in the United States and Canada due to its superior handling of legal document formatting requirements. The format supports macros, merge operations, graphics, tables, and sophisticated page layout features optimized for legal and business documents.