For browsing help files, the Dash application is very useful on Mac and iOS.
We just uploaded newer dash files for FileMaker 19.
Here you can click to launch Dash and install our plugin help or download them for manual installation:
Dash link for MBS FileMaker Plugin
Our Dash page for FileMaker for manual download
For FileMaker you find the docsets for version 19 here: FileMaker Dash Docsets
Dash link for MBS Xojo Plugin
Our Dash page for Xojo for manual download
You can also add Xojo documentation itself to your dash set, see download in preferences dialog.
Feedback is welcome.