Abstract: A tool performs automated documentation checking of program instructions written in a scripting language, such as Job Control Language JCL. The tool checks whether each of the identified procedures, programs and data definitions are properly documented. The tool operates by first processing the JCL instructions to identify what documentation should be included for the job and then processing the documentation to determine how it compares with what documentation should be included for the job. If the documentation is not complete and accurate, the tool produces error codes to identify the errors. The tool may prevent a job from being processed until it is properly documented. The tool may include a bypass mechanism that enables the job to be processed despite the tool not being properly documented.