From the introduction: The SRD that follows these Usage Guidelines is a straightforward list of 4E References, which you may use in your Licensed Product. It also contains blank formatting templates (statblock templates) for presentations such as monster statistics, poison statistics, skill challenges, and so on. These Usage Guidelines also tell you how to use needed material that doesn’t appear as a specific 4E Reference. You may use any 4E Reference in your Licensed Product, assuming the reader knows or can learn the meaning of that 4E Reference from the Core Rulebooks. Differing forms of a 4E Reference, such as a plural form, are assumed to be part of that 4E Reference. You may use such differing forms as needed to allow a clear exchange of ideas in your Licensed Product. Use the stat block templates identified and included in the SRD as guidelines (not constraints) for producing your own original content requiring such formatting. Since your content will resemble like content in the Core Rulebooks, it will be more readily usable. You may not reproduce the blank stat block templates included in the SRD in a Licensed Product. To remain in compliance with the GSL, you may not reproduce any running text, statistics block, or table from the Core Rulebooks, nor may you define, redefine, or alter the definition of any 4E Reference. Nothing in these guidelines should be taken as contrary to these GSL requirements.