>> It’s so helpful for illustrating reference point, horizontal >> extent, and vertical extent > > I have a few questions/clarifications: > > 1. Is the vertical extent (-10, 29) and the horizontal extent (-9, > 26), or are they equal to some other values [possibly incorporating > some offset]?
I guess you've missed the sentence right before the image: In the image below, the point with zero coordinates is the reference point; the horizontal extent is #'(-9 . 26), the vertical one is #'(-10 . 29). > 2. Why are there portions of the glyph that extend beyond the h/v > extent? See https://lilypond.org/doc/v2.27/Documentation/extending/lilypond_0027s-box-model I will add a link to this section. > 3. Are those “extra-extent” portions caught in/by the skylines? > Or padding? In skylines, they are caught. However, by default they are not handled while computing a score's global bounding box. > Or something else? You need special code to get them included in the global bounding box – this is only relevant if you are going to crop the output later on, otherwise the issue is not important. See the markup command `\with-true-dimensions` in https://lilypond.org/doc/v2.27/Documentation/notation/text-markup-commands#other-markup-commands which you can use as ``` \markup \with-true-dimensions \score { ... } ``` Werner
