devicename colons with the vertical bar ("|") in URIs, so "C:" becomes "C|".
.PP
A fragment identifier, if included, refers to a particular named portion
-(fragment) of a resource; text after a \'#\' identifies the fragment.
-A URI beginning with \'#\' refers to that fragment in the current resource.
+(fragment) of a resource; text after a \(aq#\(aq identifies the fragment.
+A URI beginning with \(aq#\(aq refers to that fragment in the current resource.
.SS Usage
There are many different URI schemes, each with specific
additional rules and meanings, but they are intentionally made to be
a comma-separated list of type=value
pairs, where the =value portion may be omitted for options not
requiring it.
-An extension prefixed with a \'!\' is critical
+An extension prefixed with a \(aq!\(aq is critical
(must be supported to be valid), otherwise it is non-critical (optional).
.PP
LDAP queries are easiest to explain by example.