display courtesy counter when have consecutive measure repeat simile symbols
http://lilypond.org/doc/v2.19/Documentation/notation/short-repeats subheading "Selected Snippets" shows a number over the single-measure repeat to indicate how many times that meausre has repeated so far, to facilitate counting when reading:
I found this article http://www.rpmseattle.com/of_note/on-location-number-repeated-measures-i... about a finale plugin to do this: https://usermanuals.finalemusic.com/Finale2012Win/Content/Finale/Number_... and sibilius has a built-in-feature for this http://johnhinchey.com/2010/09/23/sibelius-tutorial-drum-set-notation-pa... ...and interestingly the sibelius built-in feature places the count inside parenthesis. I'm thinking parenthesis is probably better way to go for counters, should #127371: Collapse Multiple Consecutive Single-Measure Repeat Measures into one Single Measure Multi-Repeat be implemented in musescore.
also cross-linking to the musescore feature request for exactly this: https://musescore.org/en/node/121481