[MSDN Library June 1998] Implement the Full TAPI Interface in Telephony-centric Applications (18.9821252605159%)
MSDN Library Visual Studio 6.0 > Platform SDK > Windows Programming Guidelines > Windows Logo and Programming Guidelines > Logo Requirements, Recommendations, and Best Practices > Provide Consistent, Up-To-Date Windows Support > Telephony
[MSDN Library June 1998] Implement IDropTarget and/or IDropSource Interfaces in Containers (18.827131001044%)
MSDN Library Visual Studio 6.0 > Platform SDK > Windows Programming Guidelines > Windows Logo and Programming Guidelines > Logo Requirements, Recommendations, and Best Practices > Provide Consistent, Up-To-Date Windows Support > OLE / COM and COM+