The logging support class contains methods to view current filters, add or update a filter and its logging level, and test a given filter logging level.
日志支持类包含的方法可用于查看当前过滤器、增加或更新过滤器及其日志级别，以及测试给定的日志级别。
2
The custom feeds support the ability to filter for articles, software downloads, tutorials, technical documents, and other content.
自定义提要支持过滤文章、软件下载、教程、技术文档和其他内容的功能。
3
Data Transformation: BIRT provides support to sort, filter, group and summarize data before it is presented to the user.