sthMailProfile – is a module, containing four functions for creating mail profiles and using them to send mail messages.
sthModuleScope – is a module containing four functions for working with elements in module’s scope. If you write your own modules, where some of the functions and variables are for internal use only, and not exported into caller’s scope, then this module can be used for diagnosing and debugging.
When you add user to one of the protected groups, like ‘Account Operators’, ‘Administrators’, ‘Backup Operators’, ‘Domain Admins’, ‘Domain Controllers’, ‘Enterprise Admins’, ‘Print Operators’, ‘Read-only Domain Controllers’, ‘Replicator’, ‘Schema Admins’ or ‘Server Operators’, it becomes protected too.
If you are using PowerShell pipeline regularly or just getting acquainted with it, sthPipelineTools module may be of some help.