• → AppendTo

Append

WMA link

Append[expr, elem]

returns expr with elem appended.

• • Append[{1, 2, 3}, 4]

Append works on expressions with heads other than List:

• • Append[f[a, b], c]

Unlike Join, Append does not flatten lists in item:

• • Append[{a, b}, {c, d}]