Custom toolboxes, tools, and tasks can be imported from and exported to XML files. If you need to make a lot of changes to custom toolboxes, custom tools, or tasks, you can export the definitions to an XML file, edit the XML file with an external editor, and import the updated XML file back into the open DGN file. You can generate an HTML report of all the custom toolboxes, tools, and tasks in the open DGN file.