PrintImage
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## PrintImage

PrintImage — Output the generated graph image and clean up the internal storage space.

## Synopsis

    $plot->PrintImage()

## Description

`PrintImage` outputs the generated graph image and cleans up the internal storage space used. Output goes to the browser by default, or to the output file set by SetOutputFile.

Using PrintImage is not normally needed, since DrawGraph calls PrintImage unless it was told not to using SetPrintImage.

## Parameters

None

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