indexTag Sort Order

[simoncn]

I would prefer it if you didn't abbreviate MinimServer to MS as this abbreviation is generally used to represent the name of a large software company.

If you have two Era tags and one EraSort tag, the EraSort tag will be associated with the first Era tag.

You are correct that MinimServer sorts index list entries by the index value if the sort value is the same, so your tweak will work.