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+# example program: saving and reusing call-stacks or continuations
+
+recipe main [
+#?   $start-tracing #? 1
+  c:continuation <- f
+  continue-from c:continuation            # <-- ..when you hit this
+]
+
+recipe f [
+  c:continuation <- g
+  reply c:continuation
+]
+
+recipe g [
+  c:continuation <- current-continuation  # <-- loop back to here
+  $print 1:literal
+  reply c:continuation
+]