doctitlees = "Indicaciones dinámicas y textuales alineadas verticalmente"
texidoc = "
-By setting the @code{Y-extent} property to a suitable value, all
+By setting the @code{'Y-extent} property to a suitable value, all
@code{DynamicLineSpanner} objects (hairpins and dynamic texts) can be
aligned to a common reference point, regardless of their actual extent.
This way, every element will be vertically aligned, thus producing a