Letter-spacing metal type one could only adjust groups of letters further apart (positive spacing). Letter-spacing adjustments are frequently used in news design. The speed with which pages must be built on deadline does not usually leave time to rewrite paragraphs that end in split words or that create orphans or widows. Letter-spacing is increased or decreased by modest (usually unnoticeable) amounts to fix these unattractive situations. Word processing and desktop publishing programs for personal computers such as—Microsoft Word, WordPerfect, QuarkXPress, Adobe InDesign, Adobe FrameMaker, Adobe Illustrator, and Adobe Photoshop—use differing methods of adjusting letter-spacing. What is common to most systems is
English words of Greek origin to recognize words of Greek origin, and give hints as to their pronunciation and inflection. Some romanizations are not completely standard. The Ancient Greek diphthongs and may be spelled in three different ways in English: the digraphs "ae" and "oe"; the ligatures "æ" and "œ"; and the simple letter "e". The ligatures have largely fallen out of use worldwide; the digraphs are uncommon in American usage, but remain common in British usage. The spelling depends mostly on the variety of English, not on the particular word. Examples are: "encyclopaedia" / "encyclopædia" / "encyclopedia", "haemoglobin" / "hæmoglobin" / "hemoglobin", "oedema" /