A universal syntax checker was constructed to be utilized with a text editor in a time-sharing environment. This syntax checker is a top-down, left-right, slow-back parser that will provide, when supplied the syntax of any language in the Backus-normal form, a syntax check for any string written in a language described. The procedure is capable of handling left, right, and self-embedded recursive definitions. A bibliography is appended, along with the computer program and printout. (Author/JY)