SPRINGFIELD — Appellate briefs in Illinois will no longer be bound only by pages.The state’s high court has approved word limits for appellant and appellee briefs to go along with the current 50-page limit.Under a rule-change approved by the Illinois Supreme Court this week, such briefs are also valid if they’re 15,000 words or less with reply briefs for both sides limited to 20 pages or 7,000 words.Cross-appellants and cross-appellees still get 30 pages, or 8,400 words, and a cross-appellant’s …