| DRAFT DICTIONARY CBF/imgCIF Extensions Dictionary | Draft version 1.5 for comment | 
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Definition:
        The collimation or focusing applied to the radiation.
Examples:| '0.3 mm double-pinhole' | 
| '0.5 mm' | 
| 'focusing mirrors' | 
Type: text
Mandatory item: no
Alias:Category: diffrn_radiation
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