1. Anything that is saved with the drawing, set it up in your template drawings. Each system variable is described in HELP whether or not it's saved in the drawing. Of course layers, textstyles, linetypes, etc. can all be saved in the drawing.
2. Registry saved sysvars can be set using a startup lisp. In theory, they should only need to be set once, but setting them at startup makes sure that if they are changed, a simple restart of AutoCAD sets their value back...
If purged layers is a problem, you can create a small entity (like a point) on each layer you do not want purged and then set it's visible property to false (using lisp). Another way is to attach some xdata to layer 0, referencing the data that you do not want purged (again using lisp).




(or is that an oxy-moron???)
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