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===Design===
{{Main|Software design}}
The primary purpose of design is to fill in the details which have been glossed over in the architectural design. The intention is that the design should be detailed enough to provide a good guide for actual coding, including details of any particular algorithms to be used. For example, at the architectural level, it may have been noted that some data has to be sorted, while at the design level, it is necessary to decide which [[sorting algorithm]] is to be used. As a further example, if an object-oriented approach is being used, then the details of the objects must be determined (attributes and methods).
===Choice of programming language(s)===
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===Commenting===
Due to time restrictions or enthusiastic programmers who want immediate results for their code, commenting of code often takes a back seat. Programmers working as a team have found it better to leave comments behind since coding usually follows cycles, or more than one person may work on a particular module. However, some commenting can decrease the cost of [[knowledge transfer]] between developers working on the same module.
In the early days of computing, one commenting practice was to leave a brief description of the following:
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