Indentation is essentially the same regardless of whether the writing system is left-to-right (e.g. Latin and Cyrillic) or right-to-left (e.g. Hebrew and Arabic) when considering line beginning and end.
The verb is the act of formatting text to be indented whereas the noun refers to the resulting empty space.
Each example below is in a box that represents the page boundary and uses the common typesetting lorem ipsum content.
For a free-form language, indentation is exclusively for the programmer since a code processor (i.e. compiler, interpreter) ignores whitespace characters.
[1] These variations are driven by factors that may include but are not limited to: language syntax, organizational mandate and personal preference.