What are these dt Stored Procedure in SQL 2000 Server

[Lin100]

What are these 31 Stored Procedures that exist in
the Northwind, NorthwindCS, and Pubs database in SQL 2000 Server ?

1) What is the purpose of each procedure?
2) How do you use it ?
I look it up in the help file but I can 't find
any information about it.

1) dt_addtosourcecontrol
dt_addtosourcecontrol_u
dt_adduserobject
dt_adduserobject_vcs
dt_checkinobject
dt_checkinobject_u
dt_checkoutobject
dt_checkoutobject_u
dt_displayoaerror
dt_displayoaerror_u
dt_droppropertiesbyid
dt_dropuserobjectbyid
dt_generateansiname
dt_getobjwithprop
dt_getobjwithprop_u
dt_getpropertiesbyid
dt_getpropertiesbyid_u
dt_getpropertiesbyid_vcs
dt_getpropertiesbyid_vcs_u
dt_isundersourcecontrol
dt_isundersourcecontrol_u
dt_removefromsourcecontrol
dt_setpropertybyid
dt_setpropertybyid_u
dt_validateloginparams
dt_validateloginparams_u
dt_vcsenabled
dt_verstamp006
dt_verstamp007
dt_whocheckedout
31) dt_whocheckedout_u

 

[TysonLPrice]

They're generated by VSS and Diagram wizard. Maybe someone here will take the time to list them all for you but Google can be your friend