related to #1693 changed smarty version to 4.1.0

include/smarty/docs/programmers/api-functions/api-clear-assign.md

@@ -0,0 +1,32 @@
+clearAssign()
+
+clears the value of an assigned variable
+
+Description
+===========
+
+void
+
+clearAssign
+
+mixed
+
+var
+
+This can be a single value, or an array of values.
+
+
+    <?php
+    // clear a single variable
+    $smarty->clearAssign('Name');
+
+    // clears multiple variables
+    $smarty->clearAssign(array('Name', 'Address', 'Zip'));
+    ?>
+
+       
+
+See also [`clearAllAssign()`](#api.clear.all.assign),
+[`clearConfig()`](#api.clear.config),
+[`getTemplateVars()`](#api.get.template.vars), [`assign()`](#api.assign)
+and [`append()`](#api.append)