There is a description here of the editorial process. The structure of their editorial board is here. All peer review processes look pretty much alike, however. Stuff like:
- The review should be critical and objective
- Check for plagiarism.
- Does the article adhere to the project's standards?
- Does it adhere to style guidelines, in terms of structure, length etc.
- Content – no original research
- Is it appropriate for target audience? E.g. Would the article be of interest to readers?
- Does the summary reflect the contents of the article?
- All significant claims adequately sourced?
- Recommendations – reject, accept with minor changes, accept with major changes, accept as seen