About Data Types | App | Audio | Binary | Code | Date | Image | Number | Time | Video
An app type is designed to indicate a reference to an external application which runs outside of the viewer. An app type can be used by the viewer to launch the external application and pass the atom's values or metadata as parameters. App types are useful when narrative text refers to information that requires an external program to access or manipulate, as opposed to information that can be readily resolved or displayed inside the viewer.
(@train-ticket Versailles Special (d app eurotrain-booking :from Paris :to Versailles :type winter-discount))
(@parts-request Find Replacement Filter for 223C (d app parts-master :model 223C :type replacement-filter))
(@dna-sample Tomato DNA Sample [http://dna.org/…] (d app MendelView))