Exploring

It is important to search your surroundings in order to find hidden doors.

<555h 100m 100v> exits
Obvious exits:
north - An unknown passage
west - A hallway corridor
> look south
You see nothing special to the south.
> open the door south
There is nothing by that name to open.
> search
You search your surroundings.
>
You found 'the door' south from here.
> exits
Obvious exits:
north - An unknown passage
west - A hallway corridor
(south 'the door') (hidden)
> open the door south
You push on the door in an effort to get it open.
>