When adding examples to use for categorization in Relativity be sure to note that certain kinds of documents will NOT make good examples:
Each document should be at least as long as a few paragraphs.
An example document should focus on a particular concept.
The selection of a document as an example should not be based on the document's metadata.
Categorization will not consider email headers or repeated content.
Don't use documents with a lot of numbers such as spreadsheets.
Don't assign duplicate or similar documents as examples for a category.
Don't use the same document for more than one category.