i heard from one of my friend.. that there is a software, which can execute number of drawings, if you give plot size. 

though i think its practically impossible, cuz always the sizes of plots are change, secondly everyone have different choices, 

don't know exactly about software name, so that i can get answers of all my questions..

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all i know currently about software is that - there is a software, if you give dimension of plot, it can give you multiple desgins, like if you want for a house, it can give you for a house, etc etc...