CLX provides functions that allow images to be written to a file in a standard X format. The following paragraphs describe the CLX functions used to:
| read-bitmap-file | pathname | Function | 
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 Reads an image file in standard X format and returns an image object. The returned image can have depth greater than one. 
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| write-bitmap-file | pathname image &optional name | Function | 
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 Writes the image to an image file in standard X format. The image can have depth greater than one. The name is an image identifier written to the file; the default name is (or (image-name image) 'image). |