[Symbols] showInIndexedReferenceList is undocumented

[willstott101]

The current reference/symbols docs makes no reference to the functionality demonstrated by the Default package's Indexed Reference List.tmPreferences file. It appears this file decides what comes under the References section of a Defintion/References popup for the indexed symbol list.

The built-in Erlang package seems to be the main user of the Symbol overrides and is the only one which includes showInIndexedReferenceList.

[FichteFoll]

That is correct. The reference list feature was added after that page has been written. I cannot reasonably apply changes to the docs currently, so this will be added to the backlog, but thanks for the heads-up.