Want to reference six endotes as [1-6] in my text

[enginquiry]

How can I reference six endotes as [1-6] in my text? Currently, I have
them listed as
[1 2 3 4 5 6] but i want to change this to [1-6].

Thanks.
Peter

 

[Suzanne S. Barnhill]

Remove the spaces, insert an en dash after the first or before the last, and
format the middle ones as Hidden.