Portal toolkits could provide a plug-in system for content sections to make it easier for designers to pick from a wide range of on-line services without delving into a lot of technical details.
门户工具包可为内容部分提供插件系统，以便在没有深入钻研许多技术细节的情况下，使设计人员从大量联机服务中挑选服务时变得更容易。
On-line help, a feature not offered in many products at this time.
联机帮助，当时很多产品都没有提供的这种特性。
Then when the service does come on-line, it could retrieve the pending messages from the mailbox and process them.
当该服务没有联机时，它可以检索邮箱中挂起的消息并进行处理。
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