triple Hyphens
I would imagine that if you use Triple hyphens, it will then strike through the extra ones!
let's try
-single hyphens-
.
--double hyphens--
.
---triple hypens---
.
----quadruple----
.
--------------------------loads---------------------------
OK, so on the first occurrence of a double hyphen, it goes to underline mode (ignoring the two hyphens as control characters) and then on the next occurence of double hyphens AFTER some other charchters have intervened) it goes back to normal.
many many hyphens count as a single block of text, after the first two...