There is an unofficial documentation site maintained by a developer called unanancyowen that enables documentation information to easily be searched with menus at the top of the page.
thank for the help.
I have additional question, Is it possible to use old SDK version (for LR200, SR300 etc..) for D400 series?
there is a book explaining easily on old SDK, but i have to use D435 camera. so, lot's of function in old SDK cannot be used in SDK 2.0 by myself.
is it the way to useing them in D435 camera?
There is no real compatibility between the 400 Series cameras and the old SDKs unfortunately. There might be a very small number of old SDK functions based on RGB processing that could use the D435, as they could treat the camera as though it was an ordinary RGB webcam instead of a RealSense depth camera. Mostly though, the camera and old SDKs do not work together.