()NEST()
()NEST() is a very simple two command esolang/Cellular automaton(CA) made by User:Yayimhere when he was bored. Also a ()NEST() program will not halt unless its told to by the code pointer

how it works
The code is layed out on a 2d infinite grid. There are two commands:
( and )
Below I will describe each command.
If a ( has a )to the right of it, it will copy itself like this(note the space):
() -> ()(
And if a ) Has a ( (again, note the space) next to it, that will also be copied:
)( -> )( )
However in the case that there is a ( ) next to it instead, it will put it on the line below like this:
)( ) -> )
( )
If there however is nothing next to it on the right, it will be copied instead:
() -> ()
()
If this pattern emerges:
()() ()
It will be transformed into:
()( ) ()
If a ( ) Is moved down onto a () It will encase the ():
()( ) ->*moves down*-> () () (())
And if there is a () above a ( )(note the double spaces) It will move up to it:
() -> (()) ( )
And last but not least if there is a () left to a (()) The outer brackets move down:
()(()) -> () ()
( )
It is executed top to bottom left to right
examples
Osc(2 step):
()(())
Step 1:
()(())
Step 2:
() () ( )
Step 3:
()(())