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Is there any way in SDL to publish data for IETM. What is the process to do by CSDB. Is any open source are available.
The name of the software product for producing IETM/IETP is SDL LiveContent S1000D.
You really should go to and read the web page that Chris Leggett (of Letterpart Limited) referenced; there's some good information and background there.
As I've mentioned to your question before, as far as "availability of trial" and other questions you will need to contact SDL Sales and/or open up a Case with SDL Customer Support. On the web page Chris mentioned there is also a Contact Us link.
I forgot to mention that the full set of documentation for the SDL LiveContent S1000D product is publically available at https://docs.sdl.com - scroll down to the "SDL LiveContent S1000D 5.6" link.