The Chinese Library Classification can only provide classification retrieving while the Colonclassification can be used to retrieve both by classification and by theme.
《中图法》只提供分类检索途径，《冒号分类法》既可从分类途径又可从主题途径进行检索。
2
In this review, the classification and the digestion of indigestible carbohydrates, and the health effects of their fermented products on colon were introduced.
The paper pointed out some questions about colon collocation in Chinese Library Classification, and analyzed these questions, then put forward some suggestions to extend the use of colon collocation.