The samples
                     that you  create in this book include macro-enabled content. When
                     you save your Microsoft Office documents, you must use the file extensions
                     for macro-enabled content. These file extensions are .xlsm in Excel,
                     .docm in Word, and .pptm in PowerPoint. When you open a Microsoft
                     Office document that includes macro-enabled content, you want to be
                     notified that this content is disabled.
                     
                  
                  
                  To receive
                     these notifications when you open macro-enabled content in Microsoft
                     Excel, Word, or PowerPoint:
                     
                  
                  
                  
                     
                     
                        
                        - 
                           
                           
                              
                              In Microsoft
                                 Office 2013 or 2010, select 
File
Options.
                                 
                              
 
                              
                              In Microsoft
                                 Office 2007, click 

 and select 
product-name Options,
                                 where 
product-name is
                                 Excel, Word, or PowerPoint.
                                 
                              
 
                              
                              The product-name Options dialog
                                 box appears, where product-name is
                                 Excel, Word, or PowerPoint.
                                 
                              
                              
                            
                           
                         
                        
                        - 
                           
                           
                              
                              In the selection
                                 pane, click Trust Center. The Trust
                                    Center  panel appears.
                                 
                              
                              
                            
                           
                         
                        
                        - 
                           
                           
                              
                              Click Trust
                                    Center Settings. The Trust Center dialog
                                 box appears.
                                 
                              
                              
                            
                           
                         
                        
                        - 
                           
                           
                              
                              In the selection
                                 pane, click Macro Settings. The Macro
                                    Settings panel appears.
                                 
                              
                              
                            
                           
                         
                        
                        - 
                           
                           
                              
                              Select Disable
                                    all macros with notification, and then click OK.
                                 
                              
                              
                            
                           
                         
                        
                        - 
                           
                           
                              
                              Click OK to
                                 close the product-name Options dialog
                                 box.
                                 
                              
                              
                            
                           
                         
                        
                        - 
                           
                           
                              
                              Close and
                                 restart Microsoft Excel, Word, or PowerPoint to activate this option.
                                 
                              
                              
                            
                           
                         
                        
                     
                     
                   
                  
                  Now, when
                     you open a Microsoft Office document that contains macro-enabled content,
                     you are warned that some active content has been disabled. To enable
                     the content in your Microsoft Office document: 
                     
                  
                  
                  
                     
                     
                        
                        - 
                           
                           
                              
                               In the warning
                                 message, click Options. The Microsoft
                                    Office Security Options dialog box appears.
                                 
                              
                              
                            
                           
                         
                        
                        - 
                           
                           
                              
                              Select Enable
                                    this content, and then click OK.