XSLT 2.0 and XPath 2.0 Programmer's Reference, 4th Edition (823 page)

©
(copyright symbol)

..
(parent axis).
See also
parent axis

XPath 1.0 and

^
(regex metacharacter).
See
metacharacters

!
(separator in jar URI scheme)

3
(superscript three)

2
(superscript two)

 
.
See also
nonbreaking space characters

&
ampersand