I believe the OP is referring to the 20% limitation.
The 20% limitation applies to gifts of capital gain property to non-50% charities (e.g., most family-funded private foundations). This 20% limit is applied after considering the 60%, 50%, and 30% limits (if any) for the tax year.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.