-class Axis_group_spanner;
-/** A symbol which is attached between two columns. A spanner is a
- symbol which spans across several columns, so its final appearance
- can only be calculated after the breaking problem is solved.
-
- Examples
-
- \begin{itemize}
- \item (de)crescendo
- \item slur
- \item beam
- \item bracket
- \end{itemize}
-
-
- Spanner should know about the items which it should consider:
- e.g. slurs should be steep enough to "enclose" all those items. This
- is absolutely necessary for beams, since they have to adjust the
- length of stems of notes they encompass.
-
- */
-class Spanner : public virtual Score_element {