What is a celtx file and how do I open a celtx file?

Files stored in the CELTX format are comprised of data referenced by the Celtx application and are generally classified as data files. The content of these CELTX files are referenced by the Celtx software to display the details and other files entered and saved into the CELTX project by the file author, and the Celtx program does this when a user views the corresponding CELTX project output file. Project files created using applications are classified as data files, and these files contain data with formatting elements, other files and functionalities that can be integrated via the features implemented into the associated software. The Celtx software was developed by Celtx as an application for developing pre-production materials integrated with multimedia objects and content. The data stored in files appended with the CELTX extension may contain timing sequences, features associated with storyboard authoring functionalities and screenplay development attributes, and standard database file specifications are implemented into these CELTX files. The Celtx application is generally used for the production of TV, radio, film, audio and other multimedia development projects.