CORES（编码和检索系统）是一个基于知识的专家系统，用于对零件图纸中的部件进行编码，并从图纸库中检索类似部件。该专家系统是使用RULE MASTER开发的。编码是以交互方式完成的。

CORES (CODING AND RETRIEVAL SYSTEM) IS A KNOWLEDGE BASED EXPERT SYSTEM FOR CODING THE COMPONENTS FROM THE PART DRAWING AND RETRIEVING SIMILAR COMPONENTS FROM A LIBRARY OF DRAWINGS. THIS EXPERT SYSTEM HAS BEEN DEVELOPED USING RULE MASTER. THE CODING IS DONE INTERACTIVELY.