Shallow

Shallow[expr] prints as a shallow form of expr.

Shallow[expr, depth] prints with all parts of expr below the specified depth given in skeleton form.

Shallow[expr, {depth, length}] also gives parts whose lengths are above the specified limit in skeleton form.

Examples

Show shallow form:

Shallow[{{{{a, b}}, c}, d}]
(* {{<<1>>}, d} *)

Limit depth:

Shallow[Table[i, {i, 100}], 3]

Please visit the official Wolfram Language Reference for more details.