Indentation

Her butt left an indentation in the couch.

Braille is a code that uses bumps and indentation on a surface to represent letters, which can be recognized by touch.

the indentations of a leaf

indentations of the coast

The resulting document does not contain the indentation and line breaks found in the original document.

an indentation of one em

The explanatory report acknowledges that the result of the rule under the second indentation can appear arbitrary.