The phrase "in black and white" is commonly used to refer to something that is written down or documented in a clear, unambiguous manner. However, there are several other phrases that can be used to convey a similar meaning. For example, "in writing" or "in print" can be used to indicate that something has been documented. "On paper" is another option that refers to a physical document. Additionally, "officially recorded" or "legally documented" can be used to suggest that something has been documented in a formal context. All of these phrases convey the idea that something has been clearly and accurately documented, without any room for confusion or ambiguity.