Since the 70's, the various SW product lines or organizations independently attempted to choose a single Documentation Platform for all their document types. Occasionally, they may have seemed to succeed (nroff, Interleaf, SGML, etc.), i.e. document bases have been successfully created but without actually reaching any common agreement between these different organizations. But in the long range, existing document bases were lost, destroyed or simply not maintained anymore, and all experience is lost.
This activity tends to repeat itself in successive organizations inside NET showing unfortunately no sign of maturity. This is very frustrating for everyone concerned. The unique documentation platform does not exist yet and it cannot exist as long as the documents' needs are multiple.
The result of such an obvious loss of resources lead unfortunately NTC to select tools for marketing reasons rather than for productivity reasons. This is not acceptable, because other better tools (maybe not as efficiently marketed!) still can be afforded by product lines without endangering documentation quality, on the contrary. These tools concern Internal Documentation.