验证码特征生成的说明性文件，具有较好的代表性。-Code generated descr iptive characteristics of documents, with better representation.

this is a ppt on source coding number one . very descr iptive, self explanatory, important from the course point of view

TOMCAT做WEBSERVICE的时候，会出现缓存清理不了的问题，这里是解决此问题的说明性文档资料：TOMCAT缓存清理步骤-TOMCAT time to do WEBSERVICE, will appear cache cleaning not descr iptive documentation here is to solve this problem: TOMCAT cache clean-up steps

java编程类文档，主要是描述性文件，体现重要信息，有一定指导性作用-java programming class documentation, mainly descr iptive document reflects important information, there are certain guiding role