I am new to AutoLisp and only have basic knowledge. Producing Record drawings (400+) for large project. Using AutoCAD 2011, single and multiple layout tab files. Looking for a way to Open each dwg file in the "Drawings" folder, Look for block named "revisions", if not there close file and go to next dwg, open, delete block named "revisions" and insert block named "Recordrev" at 0,0,0, Save and go to next until last drawing in folder found.