Message: Undefined control sequence
Version: 3.5x, 4.x, 5.x - Scientific WorkPlace & Scientific Word
When you are compiling a document, you see this message in the LaTeX or PDFLaTeX window and in the .log file:
! Undefined control sequence.
This common LaTeX error has many potential causes. It can occur when a LaTeX package is missing from the document or when the document uses a command name that hasn't been defined. The error can also occur when the command name in a TeX field or in the document preamble has been mistyped. Also, if you've opened a document from an outside source, the document may include a macro that is undefined on your system.
Use the .log file to help isolate the error and resolve the problem.
Last revised 06/15/06