Cannot find documentation



I’m new to the forum and Wavecom and am finding it very difficult to find documentation that is referred to many times in the developers forum but without any link information.

Is there a specific location for all documentation that I am missing ?

Right now can anyone help me find…
ADL User Guide for Open AT® OS v6.20 WM_DEV_OAT_UGD_080 ( But for V6.1 please )

Many Thanks,