a program that enables you to batch process autocad drawings. run any autolisp or script programs across multiple drawings automatically. use it to automatically batch plot to files - purge - automate changes. choose multiple drawings from multiple subdirectories and multiple autolisp programs from multiple subdirectories. run lisp is the easiest way to fix drawings with the purged dimstyle bug prior to changing over to r13c4. no need to make up lists of files to fix multiple drawings. just select fix_dims.lsp as the program and run lisp will do it all automatically - on hundreds of drawings at a time.