<pre>on goPrevModule  put getCurrentModule() into currentModule  put the number of menuItems of menu "Modules" into lastModule  set checkMark of menuItem currentModule of menu "Modules" to false  ---------------------------------------------------------------------------  if currentModule > 1  then put the name of menuItem currentModule-1 of menu "Modules" into menuItemName  else put the name of menuItem lastModule of menu "Modules" into menuItemName  ---------------------------------------------------------------------------  if char 1 of menuItemName is "-"  then put the name of menuItem currentModule-2 of menu "Modules" into menuItemName  ---------------------------------------------------------------------------  doMenu menuItemName,"Modules"  ---------------------------------------------------------------------------end goPrevModule</pre>