Not just for map making! I call it the Multiple Application Program because almost everyone can us it.

Learn how to create multiple drawing off a single drawing or create a single drawing off multiple ones and anything in between. Change and or resize blocks fast! Import and Export from all forms of ESRI files and MicroStation Do what if's without hurting the original drawing and that's not all! Learn how to attach a database to your drawings and them change the drawing by the database!

The most unused tool in your arsenal. Take the half-day map class or the full class but learn this tool! Take hours of time off each project.