Most abbreviations will reveal their meaning if you move your cursor over the acronym 
You can find most of them listed here: https://community.ld4all.com/t/what-are-all-those-acronyms-ld-rc-nd-fa-etc/21605
As for some -ILDs:
https://community.ld4all.com/t/rare-techinques-oild-nild-tild-sild-rild/11240
There are more -ILD techniques to be found on the forum, but you can use the search bottom if you want specific information about them.
Hope this answered your question