There is a "Types of properties" table at https://lilypond.org/doc/v2.25/Documentation/learning/types-of-properties and it does *not* have a row (line) for the property type "Text". Yet https://lilypond.org/doc/v2.25/Documentation/learning/modifying-context-properties says that the type of the property that has the name "instrumentName" is text. Does this mean that the "Types of properties" table is missing this row (line)?
(I've just realised that it doesn't contain a row for "real" either, but perhaps "real" is a synonym for "number".) TIA, Jaime.