Linear programming is a single goal programming method, the goal function get the maximum or minimum on the basis of limit condition.

线性规划是一种单目标规划，根据有关的约束条件得出目标函数的最大值或最小值。

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Besides presenting a document as a single entity, there are several goal-directed functions that a user may need to perform on a document; each one should have its own corresponding function.

除了要把文档作为一个单独的个体来处理，还有多个目标导向的操作，使用者也会用在文档上，每种操作都对应各自的功能。

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