The document discusses the features and functions of word processing, including: 1. Text blocks, which are units of text like words, phrases, sentences, and paragraphs that can be marked, moved, copied, or deleted. 2. Marking a text block selects it for cutting, copying, or deleting. 3. Moving a text block involves cutting the marked block and pasting it in a new location. 4. Copying a text block copies the marked block and pastes the copy in a new location.