In the Reference editor we have two fields:
"Re-use by this name"
"Use this group"
These names are useless for new editors (too cryptic and unclear - what is "re-use"? a verb? referring to what?) and also unhelpful for established users (they need to know that these are totally identical to the name="" and group="" attributes). It is also not clear that they are only occasionally needed.
Something simpler, like "Reference name (optional)" and "Reference group (optional)" could be better.
Same in the Reference list editor:
"Use this group" -> "Display references belonging to this group (optional)"