Refreshing the Viewports
Whether you are dealing with a single viewport or multiple viewports, at times stray pixels remain onscreen. This typically occurs if you have moved a large number of objects and you can see remaining pixels from where the objects were moved. Or you may have erased a number of items from the drawing and it appears that the Erase command did not get everything. Use the Redraw command to clean up these pixels, giving you a clear view of your drawing. In the case of multiple viewports, if you want to refresh all the viewports at once rather than separately, use the RedrawAll command. This refreshes the display in the current viewport.
Regenerating the View
At times, the view needs to be regenerated so AutoCAD can recalculate ...
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