OMTo accepts collaborations in any of the following forms: texts, exam problems, applets.

OMTo prefers to receive texts and exam problems in the following file formats:

• .tex (LaTeX or TeX code)
• .txt (ASCII code)
• .html

In order to facilitate compilation of the LaTeX code across distributions, please use a minimum of style files, and in particular, refrain from using local style files. If local style files are unavoidable, please provide them.

If the material contains drawings, OMTo prefers to have the code (metafont, metapost, pstricks, postscript, etc.) or the drawing files in the following formats: PNG, GIF, PS, PDF, or JPG.

OMTo prefers not to receive documents in the formats of most common word processors, as these formats tend to be unstable and the files are notoriously bulky.

OMTo prefers to receive the source code and the compiled classes for java applets.