Manifold is a publishing platform so you’ll need to prepare your text in advance and then upload it into Manifold once you’re finished. Texts may be created and loaded into Manifold using the following file formats:
Markdown (for instructions on markdown, see the Markdown Guide)
For step by step instructions on how to load your files into Manifold, please see the Preparing Texts section of the Manifold User Guide.
You might also consider reading the guidelines for Writing for the Web as you structure your text for Manifold.