heredoc
A heredoc (short for “here document”) is defined as follows on Wikipedia:
> In computer science, a here document (here-document, heredoc, hereis, here-string or here-script) is a file literal > or input stream literal: it is a section of a source code file that is treated as if it were a separate file. > The term is also used for a form of multiline string literals that use similar syntax, preserving line breaks > and other whitespace (including indentation) in the text.