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parameter| Variable factor or characteristic. For example, length is one parameter of a rectangle; its height is another. In computing, it is frequently useful to describe a program or object with a set of variable parameters rather than fixed values. |
| For example, if a programmer writes a routine for drawing a rectangle using general parameters for the length, height, line thickness, and so on, any rectangle can be drawn by this routine by giving different values to the parameters. |
| Similarly, in a word-processing application that stores parameters for font, page layout, type of justification, and so on, these can be changed by the user. |
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