Concatenating two lists or a list and an element

The concat or augment command combines to lists or adds an element to a list.

concat takes two arguments: L₁ and L₂, two lists or a list and an element (in any order).
concat(L₁,L₂) returns a list consisting of the elements of L₁ (or L₁ itself if it is not a list) followed by the elements of L₂ (or L₂ itself).

concat([3,4,2],[1,2,4])

or:

augment([3,4,2],[1,2,4])

⎡
⎣

3,4,2,1,2,4

⎤
⎦

concat([3,4,2],5)

or:

augment([3,4,2],5)

⎡
⎣

3,4,2,5

⎤
⎦

concat(2,[5,4,3])

or:

augment(2,[5,4,3])

⎡
⎣

2,5,4,3

⎤
⎦

concat([[3,4,2]],[[1,2,4]])

or:

augment([[3,4,2]],[[1,2,4]])

⎡
⎣

⎤
⎦