.I7X File Extension
Inform 7 Extension Source Code File
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What is an I7X file?
An I7X file contains source code used by Inform, an IDE for creating Interactive Fiction (IF) programs used by Z-code interpreters, such as Zoom or Frotz. It stores code for an extension that extends the capabilities of Inform, such as interface upgrades or IF story creation capabilities. I7X files are saved in plain text with Unicode UTF-8 encoding.
Inform is a free application that features a programming language users can utilize to create custom IF stories that other users can experience. Inform users can download I7X extensions from various public sites, such as GitHub and IF fan sites, then install them in Inform.
You can use Inform 7 to create I7X files. To do this, select File → New Extension Project, write the extension, then select File → Export Extension.... Or you can select File → New Extension..., write your extension, then select File → Save or Save As....
You can also create I7X files with any text editor. However, you may need to manually change the .txt file extension to .i7x.
NOTE: I7X files were introduced with the release of Inform 7.
How do I open an I7X file?
You can open an I7X file with Inform by selecting File → Install Extension. Once opened in Inform, the information will be displayed in the right panel.
Since I7X files are saved in plain text, you can open them with a plain text editor, such as Microsoft Notepad (Windows) or Apple TextEdit (macOS). Also, Microsoft Visual Studio Code (multiplatform) is a useful source code editor that includes helpful syntax editing capabilities for viewing and editing I7X files.