Make AutoCAD blocks transparent and opaque with WIPEOUT 

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Great tip!!!! After more than 20 years using ACAD I just learned something new. Thank you!!

Please make some lisp video ex. add, sub, mul array

Sir My question is... I want to hatch walls with solid fills. But i want these to be shown fade or say thin while i print the plan.. How can i do it. If i make transparent hatch, it became tthick or dark solod fills in print.. I want it fade. I hope you understand my question. How can i do it.. Please....??