Preserve line breaks in title using pandoc

Question

Consider the following title block in pandoc-flavored Markdown:

% Higgelty Pigglety Pop!
  or
  There Must Be More to Life
% Maurice Sendak

Answer 1

% Higgelty Pigglety Pop! \
  or \
  There Must Be More to Life
% Maurice Sendak

Pandoc Markdown enables the escaped_line_breaks extension by default:

A backslash followed by a newline is also a hard line break. Note: in multiline and grid table cells, this is the only way to create a hard line break, since trailing spaces in the cells are ignored.