[exim] Question related to Exim4 documentation

Hello. I have a question related to Exim4 configuration because I have problem with finding the answers on it on the documentation pages (or are not quite sure where to search it).

The question is related to the commands starting from the dot (like for example: .ifdef .. .endif, .include, etc.):

1. where could I find the documentation of it on the Exim4 documentation website?
2. does the .include support wildcards ?

With regards,
Mcgiwer