@_ObjectName = name of the object
@_ObjectType = type of the object
@_TableRelated = table
@_Detailed = if 0 it will show you only the tables. if 1 it will show you also the columns
There are many useful command-line applications that are either associated with, or are distributed with, SQL Server. They all have their uses and several become important as part of script-based automation of tasks. It is definitely worth knowing what is lurking in your tools\binn directory.