Table Column XHTML tag

Table Column Transitional   Strict
col tags example tags example
Must be contained in <table>      
Must contain in opening tag   ----------------------   ----------------------
Must not contain in opening tag        
Can contain in opening tag        
Must contain between tags        
Can contain between tags        
Must not contain between tags        
Must not be contained in        
Can be contained in        
col elements define the alignment properties for cells in one or more columns.