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@@ Line 1,734: / Line 1,734: @@
 =={{header|langur}}==
-<syntaxhighlight lang="langur">writeln "calc.: ", fold f{+}, map f 1/.x^2, 1..1000
+<syntaxhighlight lang="langur">writeln "calc.: ", fold fn{+}, map fn(.x) 1/.x^2, 1..1000
-writeln "exact: ", pi^2/6</syntaxhighlight>
+writeln "known: ", pi^2/6</syntaxhighlight>
 {{out}}
@@ Line 1,746: / Line 1,746: @@
 <syntaxhighlight lang="langur">mode divMaxScale = 100
-writeln "calc.: ", fold f{+}, map f 1/.x^2, 1..1000
+writeln "calc.: ", fold fn{+}, map fn(.x) 1/.x^2, 1..1000
-writeln "exact: ", pi^2/6</syntaxhighlight>
+writeln "known: ", pi^2/6</syntaxhighlight>
 {{out}}