identifier: _potatoes41$
numbers: 42 23.45e6
string: "a C-like string that accepts backslash-escape sequences"
word: 1\'ecurie_1stable
blanks: 
	 "blanks are ignored"
C++: /*comment*/
	 // other comment
	 "blanks and C++ comments are ignored"
HTML: <!--comment-->
	 "blanks and HTML comments are ignored"
LaTeX: % comment
"blanks must be skipped explicitly"
	 "only comments were ignored"