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 To build from source for Linux or other UNIX/UNIX-like systems, it is generally sufficient to download just the source `qpdf-<version>.tar.gz` file.
 
-Virtually all Linux distributions include packages for qpdf. If you'd like to run the latest version of qpdf as an [AppImage](https://appimage.org/), you can download `qpdf-<version>-x86_64.AppImage`. This is a self-contained executable that you make symlink `qpdf` to and run on most reasonably recent Linux distributions.
+Virtually all Linux distributions include packages for qpdf. If you'd like to run the latest version of qpdf as an [AppImage](https://appimage.org/), you can download `qpdf-<version>-x86_64.AppImage`. This is a self-contained executable that you make symlink `qpdf` to and run on most reasonably recent Linux distributions. See README-appimage.md in the qpdf source distribution for additional details, or run the AppImage with the `--ai-usage` argument to get help specific to the AppImage.
 
 For Windows, there are several additional files that you might want to download.