3 <defun fname="factorial">
4 <args><symbol>x</symbol></args>
6 <if><lt><variable vname="x"/><integer>2</integer></lt>
9 <funcall fname="factorial">
10 <sub><variable vname="x"/><integer>1</integer></sub>
19 <args-unevalled><symbol>x</symbol>
20 <optional/><symbol>y</symbol>
21 <rest/><symbol>rest</symbol>
24 <list><variable vname="x"/></list>
28 <set><symbol>x</symbol><integer>10</integer></set>
29 <funcall fname="factorial"><variable vname="x"/></funcall>
31 <funcall fname="temp">
39 <list><integer>2</integer></list>