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The classic workspace no longer ships with AutoCAD. Using this Lisp you can easily recreate the AutoCAD Classic workspace. As much as we older types resort to the way we "used to do it" I suggest that you learn the newer UI instead of reset to the classic-style interface. However, if you really want to go there try these settings/steps: Manual Mode ========== MENUBAR = 1 Tools > toolbars > acad > layers hoover over layers toolbar > right click > properties  hoover over any toolbar > right click > standard  hoover over any toolbar > right click > styles hoover over any toolbar > right click > workspaces  RIBBONCLOSE  arrange toolbars  workspace, saveas, Classic Automatic Mode ============ 1. Load the LISP 2. Type "CLASSIC" 3. Done 4. To Restore to Original Ribbon Mode Type "ORIGINAL"

To improve AutoCAD performance you can tweak some settings related to the operating system and your hardware. But apart from making these changes, there are also some default settings which can be changed using system variables to visibly enhance the performance of AutoCAD. In this article, I have listed such system variables. TOOLTIPS ======== This variable is set to 1 as default which will show tooltips when you hover your cursor over a tool. To improve the performance you can turn off these tooltips by changing TOOLTIPS system variable value to 0. ROLLOVERTIPS ============ If the ROLLOVERTIPS system variable is set to 1 and you hover your cursor over an object in the drawing area then a tooltip will appear which will show a small list of the object properties. Make this variable 0 to increase speed when working with large drawings. SELECTIONPREVIEW ================ By default, the value of SELECTIONPREVIEW system variable is set to 3, which allows a preview of th