An include document is a building block, just like a Text Block, a Field Set, a View or a Form Definition. A building block can be used in more than one document. Refer to Building blocks for more information on building blocks. Include documents are included in the model document at the moment the ITP Model is created.
Include documents are included in another document by their name with the __INC instruction. Documents inside subfolders of an include folder must be included with their folder as well. . Refer to the ITP Model language Help for more information on the __INC instruction. Be advised that if you want to include a document in a specific (sub)folder you also need to check the order in which the include paths are searched. The list in the project configuration is searched from top to bottom. If a version of the document you want, or a document with the same name, exists in one of the earlier searched paths, that version or document will be found first and thus used.
Documents in the include folders can also be included as an auto-include. Refer to Auto-includes for more information.
Include documents are located in special include documents folder. These folders are configured on the Project tab of a project.