Map thingys??

Hello.

Where can I find the function/hooks etc for the map things.
For example: I want to see if someone is standing in an trigger.
Also I want to spawn props via lua which are defined with an obsolete in hammer.

Can anyone tell me where to find this in the wiki?

When you create a SENT with the same name as those entities, it will be created in their place.

So, if i make an sent called doorblocking which is an blastdoor, put into the map an obsolete ‘doorblocking’ there will be an blastdoor?