### File Types supported

MathCast supports a few file types for saving and loading equations to the hard disk. The files are categorized into two groups: descriptive files, and picture files.

#### Descriptive Files

MathCast’s main language is MathML 2.0 Presentation. Thus all files are described in XML based files. The Settings Screen includes a few options that give you some control over the final makeup of the XML.
To import and export files:

- You can export a single equation to an .mml file (which is basically just an XML file with one math tag).
- You can import a single equation from an .mml file or from any XML based file (MathCast will just load the first math tag).

There are a few rules concerning saving and loading equation lists:

- When saving a newly created list (one that has not been previously loaded from the hard drive), MathCast stores it in XHTML format.
- MathCast allows you to open any XML file which includes MathML. You can work on the mathematics in the Edit Screen. When saving that file, any markup that existed beforehand is retained. This unique ability is a part of MathCast’s Mathcasting feature.

#### Picture Files

You can export single equations into one of the following picture files: BMP, PNG, and EMF.
Use the BMP and PNG formats for a webpage or for on-screen reading.
EMF stands for Enhanced Metafile. These files can be used with MS Word and OpenOffice.org Writer as well as other applications. EMF allows saving pictures in higher detail. Use EMF when you want to use the equations in printed documents.