STP格式文件信息该如何阅读

hanqi

在VB开发擦CATIA时，我想获得PART中零件的所有拓扑信息，（如棱边，角度，坐标系等......）有一种方法是将PART存成STP格式文件，我已经完成，现在不知道得到的文本文档中的得到的信息该如何阅读，我在附件中放了一份stp文件，是由一个pad导出的。不知各条语句所代表的意义.请问该去哪里找相关资料？欢迎给出指教。也欢迎同道者留下qq.
  
ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('CATIA V5 STEP Exchange'),'2;1');
  
FILE_NAME('D:\\Documents and Settings\\zjy\\My Documents\\My Pictures\\Part1originstp.stp','2005-03-01T08:45:14+00:00',('none'),('none'),'CATIA Version 5 Release 13 (IN-9)','CATIA V5 STEP AP203','none');
  
FILE_SCHEMA(('CONFIG_CONTROL_DESIGN'));
  
ENDSEC;
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END-ISO-10303-21;

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Yeren2005