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+* function calls
+function foo
+ linkage
+ myparam word
+ ret word
+ procedure using myparam returning ret
+ display "myparam is " myparam
+ set ret to 0
+
+public function main
+ linkage
+ status word
+ storage
+ myvar word
+ procedure returning status
+ set myvar to 123
+ call foo using myvar returning status
+ display "status is " status