This is yet another extension for inserting a number at each selection caret.
Why should you use this one?
Numbers increment by location in the document, not the order the carets were added.
This means if you multi-select from the bottom up, the numbers aren't reversed.
Both initial value and step can be specified (defaulting to 0 and 1, respectively).
You can easily configure separate shortcuts for 0-indexed or 1-indexed numbers.
Basic Usage
Create one or more selection carets and run "Insert Numeric Range" in the command panel.
Optionally, you can enter start and step parameters.