LilyPond Internals Reference: 2.2.32 Dynamic_engraver

### 2.2.32 Dynamic_engraver

Create hairpins, dynamic texts, and their vertical alignments. The symbols are collected onto a `DynamicLineSpanner` grob which takes care of vertical positioning.

Music types accepted:

absolute-dynamic-event and span-dynamic-event

This engraver creates the following layout object(s):

DynamicLineSpanner, DynamicText, DynamicTextSpanner and Hairpin.

`Dynamic_engraver` is not part of any context.

#### Internals Reference