title: Prevent Concurrent Editing of a List Item
body: <p>In Sharepoint MOSS multiple users can edit the same item in a sharepoint list at the same time…the first person to save their edit “wins”.</p>
  
  <p>Is there a way to prevent this, to lock the list item while it is being edited?</p>
  
  <p>NB:  This refers to a custom list -Not a document in a document library</p>