The uniform adjustment of spacing across an entire range of characters in a text block, as distinct from Kerning, which adjusts spacing between specific character pairs. Positive tracking opens up letter spacing for an airier, more display-oriented feel; negative tracking tightens it for a denser texture. Tracking is a global control applied evenly and is commonly used to improve the Readability of all-caps text (which typically benefits from increased spacing) or to fine-tune text fit within a layout.