Romanche dash

[Patrick Andries]

Could someone confirm the vague memory I have of Romanche using a dash (-)
to modify the pronunciation of certain words.

s-charpa (the shoe) is apparently pronounced shtsharpa.

The same goes apparently for the village La Punt-Chamues-ch pronounced
"Tshamooeshtsh". http://gastroarena.ch/result_DE.phtml?PLZ=7522

How would "scharpa" or "Chamuesch" be pronounced ?

P. Andries