Missing documentation: Additional Material/Information

[riedde]

Description needed for:

• <accMat/> (@riedde)
• <addDesc/>(@gucl-mu)
• <catchwords/> (@doerners)

[doerners]

Noob question regarding catchwords:
As I understand a catchword is what you would refer to in German as Kustode (see: https://de.wikipedia.org/wiki/Kustode_(Buchherstellung) / https://en.wikipedia.org/wiki/Catchword) and thus seems a very text specific thing. For encoding music, MEI offers the <custos> element. The <catchwords> element is derived from TEI where its application domain is designated as "codex, incunable or other object". I'm wondering what the difference between both elements is, apart from referring to words or notes? And what might a use case for the <catchwords> element in music look like?

[ahankinson]

<custos> are generally from system-to-system. They're especially helpful in situations where the clef might change on the next system, so you should sing the pitch given by the custos until you figure out the clef shift.

<catchwords> are from page-to-page. Here's an example of a printed music book with catchwords on the bottom-right:

https://digital.bodleian.ox.ac.uk/objects/aeb0a34b-c27c-47be-a69c-1ff818810e50/surfaces/25cf11f5-65fe-40ea-9925-4ec5eb6448c4/

[doerners]

Ah ok, thanks @ahankinson, that really helped!

[gucl-mu]

Here is a first draft for <addDesc>. Certainly still room for improvement :D

In music manuscripts there can be various kinds of entries, additions, corrections, marginalia and revisions; all these interventions in the “original” manuscript can be documented under <addDesc>. However, it is important to understand, that these are not single additions to the musical text directly – these should be marked up in the music encoding as part of the editorial markup (see 11.2 Editorial Markup) – but rather textual additions to the margins of the page, or indeed a summary of all the additions made by a particular scribe. These additions to the manuscript can come from the composer himself, copyists, typesetters, publishers, previous owners or librarians: In accordance with common scholarly practice, these entries are usually given in flow text with an indication of the localization within the manuscript as well as the writing medium used. E.G.

<addDesc>
Die Handschrift weist auf fol. 1r, 2v und 4v Eintragungen mit Bleistift von fremder Hand auf.
</addDesc>

Or

<addDesc>
Stechereintragungen und Korrekturen mit Rötel.
</addDesc>

In many cases, however, the addition in the manuscript itself is also cited:
Auf S. 110 links mit Bleistift von Schindler „NB (Sch.) Hier fehlen 8 Takte (auch im Chor). jedoch die eine spätere […]“ (https://digital.staatsbibliothek-berlin.de/werkansicht?PPN=PPN756658373&PHYSID=PHYS_0398&DMDID=DMDLOG_0005)
This entry could be encoded as follows:

<addDesc>
Auf S. 110 links mit Bleistift von Schindler „NB (Sch.) Hier fehlen 8 Takte (auch im Chor). jedoch die eine spätere […]“
</addDesc>

A slightly more structured form would be:

<addDesc>
<annot>
<p> Auf S. 110 links mit Bleistift von Schindler „<q>NB (Sch.) Hier fehlen 8 Takte (auch im Chor). jedoch die eine spätere […]</q>“</p>
</annot>
</addDesc>

However, although a standardization of these descriptions is difficult to realize due to the different practices, these transcriptions – as in the musical text – can be marked by means of <add>, <del>, (MEI.edittrans) etc. (see 11.2 Editorial Markup) and assigned to a specific scribe by @hand (see ):

<addDesc>
<annot>
<p>Auf <locus> S. 110</locus> links mit Bleistift von <persName>Schindler</persName> „<q><add hand="#Sch">NB (Sch.) Hier fehlen 8 Takte (auch im Chor). jedoch die eine spätere <unclear>[…]</unclear></add></q>“</p>
</annot>
</addDesc>

For structuring purposes, it may sometimes be useful to separate entries made by a composer in the manuscript from those made by others:

<addDesc>
<annot label="autograph">
<p>[autograph entries]</p>
</annot>
<annot label="foreign">
<p>[foreign entries]</p>
</annot>
</addDesc>

Depending on how one defines “entries”, can also be encoded under <addDesc>.
If additions in the manuscript provide conclusions about the origin, provenance, binding or printing, it is recommended to store this information also under the corresponding sections in the header