Template talk:Subscription or membership required

Generalizing with new parameters
I'd like to merge this with Template:ODNBsub by adding new parameters:
 * boolean yes or no
 * boolean yes or no
 * boolean yes or no
 * URL

I'd like to use Template:link notes, but I don't see how to make parentheses optional with that. Maybe I'll copy it's CSS class.

Thoughts? Daask (talk) 22:19, 28 December 2023 (UTC)