| addErrorMessage | 
                      page.addErrorMessage( message [, stopProcessing ] ) | 
                      Adds an error message that will be displayed to the user. | 
                    
                    
                      | addErrorMessage | 
                      page.addErrorMessage( messageNo [, replaceParameters ] [, stopProcessing ] ) | 
                      Adds an error message that will be displayed to the user. | 
                    
                    
                      | addErrorMessageText | 
                      page.addErrorMessageText( text [, replaceParameters ] [, stopProcessing ] ) | 
                      Adds an error message that will be displayed to the user, sourced from an existing text. | 
                    
                    
                      | addInfoMessage | 
                      page.addInfoMessage( message [, stopProcessing ] ) | 
                      Adds an information message that will be displayed to the user. | 
                    
                    
                      | addInfoMessageText | 
                      page.addInfoMessageText( text [, replaceParameters ] [, stopProcessing ] ) | 
                      Adds an info message that will be displayed to the user, sourced from an existing text. | 
                    
                    
                      | addWarningMessage | 
                      page.addWarningMessage( message [, stopProcessing ] ) | 
                      Adds a warning message that will be displayed to the user. | 
                    
                    
                      | addWarningMessage | 
                      page.addWarningMessage( messageNo [, replaceParameters ] [, stopProcessing ] ) | 
                      Adds a warning message that will be displayed to the user. | 
                    
                    
                      | addWarningMessageText | 
                      page.addWarningMessageText( text [, replaceParameters ] [, stopProcessing ] ) | 
                      Adds a warning message that will be displayed to the user, sourced from an existing text. | 
                    
                    
                      | existErrorMessages | 
                      page.existErrorMessages( ) | 
                      Returns true if undisplayed error messages exist for this element, otherwise returns false. | 
                    
                    
                      | existInfoMessages | 
                      page.existInfoMessages( ) | 
                      Returns true if undisplayed info messages exist for this element, otherwise returns false. | 
                    
                    
                      | existMessages | 
                      page.existMessages( ) | 
                      Returns true if undisplayed info, warning or error messages exist for this element, otherwise returns false. | 
                    
                    
                      | existWarningMessages | 
                      page.existWarningMessages( ) | 
                      Returns true if undisplayed warning messages exist for this element, otherwise returns false. | 
                    
                  
                 
Pageinterface represents a displayable page of a form. A page can be displayed to a user as a web page or can be included within a PDF document (see WebForm#generatePdf(PdfOptions)).Individual pages can be accessed via the Pages interface.