As a part of my workflow, I create several different files within a given project (i.e. planting, irrigation, hardscape, etc.). For the longest time I placed titleblocks as 2D symbols with linked text to custom records. I could reference these symbols in between project files and it would allow me to keep project specific information (i.e. project title, date, etc.) editing to one location, the mother file. I could customize each sheet with sheet specific information by modifying the records on