I think the question was simple and it has common sense thing. You work and make sometime a sketch and you think: WOW this sketch I want use someday in the future, 5 minutes or 5 days/months, not important- first thing you think let''s save it!. That was the meaning of the question, Something what proe does since long long time ago!
Your "answers" are not answers, they want just to look as answers!
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