Complex sentence: In the journalism industry, particularly in the United States (see News style), the term is sometimes spelled "lede", to differentiate it from the metal lead (pronounced "led"), which was used in hot metal typesetting.
Split into simpler sentences: In the journalism industry, particularly in the United States (see News style), the term is spelled "lede". The alternative spelling was invented to differentiate it from the metal lead (pronounced "led"), which was used in hot metal typesetting.