If you mean in external e-mails for example, take a look at this link: http://www.hansamanuals.com/main/manuals/mailnumber___447/theconf___85/hwconvindex.htm
I would like to know what BackgroundHALShouldPause does, and how to use it. While it's listed in the HAL Primitives report, it is not used in source code and it doesn't appear in the LMS HAL...