Hides the text message by transforming the appearance of the carrier text message, such as by changing font sizes and styles, adding extra spaces as whitespaces in the document, and including different flourishes in letters or handwritten text.

• A. Semagrams
• B. Open Codes
• C. Linguistic Steganography
• D. Text Semagrams

Answer: (D)

The technique described is about hiding data in the way the text appears, not by changing the actual words or letters. Altering font sizes and styles, adding extra spaces, and adding handwritten flourishes all modify the visual presentation of the carrier text while leaving the underlying content recognizable. This kind of formatting-based concealment is best described as Text Semagrams.

Linguistic steganography would focus on altering the language itself—word choice, syntax, punctuation, or other linguistic elements—to encode a message—rather than changing how the text looks. The other terms point to related ideas, but they don’t precisely capture the approach of embedding information through the text’s formatting and appearance.