The Source property page allows you to set the initial contents of the component, using either the external MathML expression encoding or the internal Zed expression encoding, by setting one of the four Zed properties described in the following section. The drop-down list selects the property to be used, and the Get and Set buttons work as they do on the configuration dialogs.

The Config property page allows you to set the initial configuration customization of the component, by setting any of the six configuration properties described in the following section. The drop-down list selects the property to be used, and the Get and Set buttons work as they do on the configuration dialogs.

The Other property page allows you to provide initial settings for two of the boolean properties described in the following section. Click the check boxes to set or clear the value of the AutoSize or GrabFocus properties to the desired value.

Set the AutoSize property to true to instruct Zed to automatically increase or decrease its size based on the size of the expression being edited. The default value of the AutoSize property is false.

Set the GrabFocus property to true to instruct Zed to automatically grab the input focus once it completes loading. Typically there will only be one such instance of Zed on a given HTML page; if more than one instance of Zed has the GrabFocus property set, then only one of them will become the focus window. The default value of the GrabFocus property is false.

The FontSize property can be used to control the size of the font used to display the MathML source file associated with this instance of Zed. Setting the value of this property changes the value of the fontsize attribute in the presentation of the MathML content contained in the document.

The ReadyState stock property provides a standard indication of the current progress of loading the Zed component. Zed uses only the standard loading and complete state values.

The MmlSource property can be used to extract the name of the MathML source file associated with this instance of Zed. Setting the value of this property loads the expression being edited from the named file, which should contain data in MathML format.

The MmlContent property can be used to extract the MathML content string for the entire expression being edited by this instance of Zed. Setting the value of this property changes the expression being edited to the value given.

The MmlPresent property can be used to extract the MathML presentation string for the entire expression being edited by this instance of Zed. Setting the value of this property changes the expression being edited to the value given.

The MmlCurrent property can be used to extract the MathML content string for the current expression being edited by this instance of Zed. Setting the value of this property changes the current expression being edited to the value given.

The ZedSource property can be used to extract the name of the Zed source file associated with this instance of Zed. Setting the value of this property loads the expression being edited from the named file, which should contain data in Zed format.

The ZedContent property can be used to extract the Zed internal content string for the entire expression being edited by this instance of Zed. Setting the value of this property changes the expression being edited to the value given.

The ZedPresent property can be used to extract the Zed internal presentation string for the entire expression being edited by this instance of Zed. Setting the value of this property changes the expression being edited to the value given.

The ZedCurrent property can be used to extract the Zed internal content string for the current expression being edited by this instance of Zed. Setting the value of this property changes the current expression being edited to the value given.

The ZedPosition property can be used to extract a list of indexes that describe the location of the current expression within the content expression being edited by this instance of Zed. Setting the value of this property changes the location of the expression cursor to point to the location given.

The ZedPositionById property can be used to extract an identifier that appears as the id attribute of the current expression. Setting the value of this property changes the location of the expression cursor to point to the expression in the document whose id attribute has the given value.

The MmlContentById parameterized property can be used to extract the MathML content string for the named expression. The expression returned is selected by looking for an id attribute whose value matches the parameter given. Setting the value of this property changes the named expression to the value given.

The MmlPresentById parameterized property can be used to extract the MathML presentation string for the named expression. The expression returned is selected by looking for an id attribute whose value matches the parameter given. Setting the value of this property changes the named expression to the value given.

The ZedContentById parameterized property can be used to extract the Zed internal content string for the named expression. The expression returned is selected by looking for an id attribute whose value matches the parameter given. Setting the value of this property changes the named expression to the value given.

The ZedPresentById parameterized property can be used to extract the Zed internal presentation string for the named expression. The expression returned is selected by looking for an id attribute whose value matches the parameter given. Setting the value of this property changes the named expression to the value given.

The LoadConfig method allows a script writer to load a customized configuration file, specified by name. If no file type is specified in the file name, it is assumed to be .zc. If no path is specified in the file name, the configuration file is assumed to be in the Config directory where Zed is installed. The LoadConfig method returns true on success, false on failure.

The SaveConfig method allows a script writer to save a custom configuration file, specified by name, containing the current state of all configuration options. If no file type is specified in the file name, it is assumed to be .zc. If no path is specified in the file name, the configuration file will be written into the Config directory where Zed is installed. The SaveConfig method returns true on success, false on failure.

The GetConfig method allows a script writer to retrieve a configuration property as a string, one section at a time, by giving the name of the desired configuration property. The information returned by the method is in the same format as is shown by the corresponding configuration dialog.

The SetConfig method allows a script writer to set a configuration property from a string, one section at a time, by giving the name of the configuration property to be changed. The information given as the second parameter to the method should be in the same format as is shown by the corresponding configuration dialog. The SetConfig method returns true on success, false on failure.

The AddConfig method allows a script writer to add to a configuration property from a string, one section at a time, by giving the name of the configuration property to be augmented. The information given as the second parameter to the method should be in the same format as is shown by the corresponding configuration dialog, and should include only those additional declarations to be added to the configuration property. The AddConfig method returns true on success, false on failure.

The ReadConfig method allows a script writer to read a configuration property from a file, one section at a time, by giving the name of the configuration property to be augmented, and the name of the file containing the information to be read. The information in the file named by the second parameter to the method should be in the same format as is shown by the corresponding configuration dialog. The ReadConfig method returns true on success, false on failure.

The WriteConfig method allows a script writer to write a configuration property to a file, one section at a time, by giving the name of the configuration property to be augmented, and the name of the file to contain the information to be written. The information in the file named by the second parameter to the method will appear in the same format as is shown by the corresponding configuration dialog. The WriteConfig method returns true on success, false on failure.

The ShowPalette method allows a script writer to activate a particular named palette. The named palette will be displayed to the user, who can then select items from the palette just as if it had been activated by other means. The ShowPalette method returns true on success, false on failure.

The HidePalette method allows a script writer to deactivate a particular named palette. The named palette will be removed from the desktop, but can be reactivated as desired. The HidePalette method returns true on success, false on failure.

The ShowFormat method allows a script writer to control the layout formatting switches that appear on the formatting toolbar, by giving the name of the formatting switch as the key, and by giving the value of "true" or "false" to indicate whether to set or clear the corresponding layout formatting switch. The valid formatting switch names are "identity", "inverse", "assoc", "times", and "apply". These values correspond to the toggle buttons that appear on the formatting toolbar in the application edition. The ShowFormat method returns true on success, false on failure.

The ApplyTemplate method allows a script writer to invoke a template by specifying the template as the argument to the method. The format of the template supplied as the argument is the same as that used in the configuration dialog for creating named template rules. The ApplyTemplate method always returns true.

The ApplyTemplateByName method allows a script writer to invoke a named template by specifying the name of the template as the argument to the method. The format of the name of the template supplied as the argument is the same as that used in the configuration dialog for creating menus and palettes using named template rules. The ApplyTemplateByName method always returns true.

The ReadyStateChange stock event is fired any time the value of the ReadyState stock property changes. This event performs much the same role as the custom Onload event.

The Onload event is fired once Zed has been completely loaded and all of its data structures have been initialized. The intent of this event is to allow script writers a means of ensuring that Zed is ready to accept other method calls before initiating other actions.

The Update event is fired each time that the expression contained in a Zed document is changed. As such, this event can signal any of a number of different conditions, including user input, script actions, and file or configuration property loading, among other things.

The Submit event is fired upon request by the user, typically in response to a keyboard accelerator as specified by the configuration options. This event is typically bound to a key such as the Enter key, but may be rebound as desired by the script writer.