Browsing Spanish translation

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Ubuntu is open source software. Open source software differs from proprietary software \dash software whose source code is patented and is therefore not freely available for modification or distribution by anyone but the rightsholder.\marginnote{The \textbf{source code} of a program is the collection files that have been written in a computer language to make the program.} Microsoft Windows and Adobe Photoshop are examples of proprietary software. \marginnote{\textbf{Proprietary software} is software that cannot be copied, modified, or distributed freely.}