US Patent 9916464 Replacement text for textual content to be printed

Examples disclosed herein relate to replacement text for textual content to be printed. Examples include a covert version of a document including textual content to be printed, the covert version including replacement text having, for each character of a plurality of first characters of the textual content, a corresponding second character having a different semantic meaning than the first character. The covert version also includes an encrypted representation of the textual content.