Amnesia editor - Testing help?

[Racingcreed]

I'm just wondering if there's a quicker way to test a map, perhaps a way I'm unfamiliar with. The way I test my level is create a section in the editor, save the map and load up Amnesia, load the custom story and test it that way, but I've seen in a few videos on YouTube that there is in fact (perhaps other ways) of doing this. Where you're able to walk around the map, and "quick reload" the map to add the additional features you've implemented to the design.

Just curious, wanting to learn everything and anything.

Thanks,

RC