Text objects are entered either as simple strings between double quotes
or as \markup blocks that can accept a variety of advanced text
formatting and graphical enhancements.
As such, markup blocks may be used:
TextScript object (attached to notes with -, ^ or
_),
TextMark introduced with the \textMark keyword, or
\textEndMark command, or other similar objects such
as MetronomeMark introduced with \tempo,
\score block,
\header block (e.g. title,
subtitle, composer) or in some variables defined inside the
\paper block such as evenHeaderMarkup for page numbers.
\markup may additionally be used for lyrics, in chord names,
and as dynamics. In fact, it is possible to use \markup to
customize the appearance of virtually any object, as demonstrated in this
example using various methods.