Combinations of Other Delimiter Characters

With prefixes:
<scoped_addr>%<scope_id>/<prefix_length>
e.g. fec0:0:0:1::/64(site ID = 3)  -> fec0:0:0:1::%3/64

in URL's:
[<scoped_addr>%<scope_id>]
e.g. http://[fec0:0:0:2::1234%10]:80/index.html