Anchoring!

(^/) The Jedi

… Of course, use a “Table” would give more flexibility but the user would loose the endnotes if cut-pasted in a table or if the endnotes paras were “converted” to a table.

A cool way by script (tested) would be:
Make the endnotes “invisible” before getting their data to be inserted in a table created by the Script!
If update needed (locally or in all the doc), just 1 click again.
… And the user could simply choose a numbering per column!
… And the user could apply an hyperlink to the cell to come back to the endnote source!
… And the user could apply a “graphic effect” to the cell!
… And blablabla!

(^/)

Is each answer (in the note) a single para?

(^/) The Jedi

No sense for me!

The question is about what enrichment “before/after :”!

That means what choice an user has to make first defining the para style as “regular” or “bold” font style!

E.g., (s)he will use a “^.+?:” Grep style to bold text before in a “regular” para style! …
Which clearly means: (s)he will only want to bold if “:”!

About the use or not of Grep styles, I think the true matter boils down to the Grep trivial knowledge.

(^/)

3 nested styles:

[None] up to :
[None] up to 1 characters
Bold through End Nested Style Character

(^/)

Doable of Course!

“1 click!”, by script, as in this video:

(^/) The Jedi

TOC, TOC! …

(^/) The Jedi

… In this particular and simplistic case:

Find:
(\$)(\d+)\.(\d+)(?=(CA|US))
Replace by:
$2,$3$1

(^/) The Jedi