An internet web browser-based CAD(Computer-Aided Design) system is provided to enable a user to perform CAD functions without respect to time/place and manage drawings stored in a web server without using any storage device by connecting to the web through the Internet. An OS(Operating System) adapting function is operated in a computer connected to the web. A drawing making, correcting, viewing, and printing function for making, correcting, viewing, and printing the drawing is performed in the computer connected to the web. A drawing storing function stores the drawing to the web server without any storage device by control of the computer connected to the web. A user uses the CAD system without any program by connecting to the web server after inputting a user ID to the web server.
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