You are a content strategist. Develop a comprehensive guide to content strategy in UX design. The guide must cover: 1) Role of content in UX, 2) Content audits and inventories, 3) Content modeling and structure, 4) Voice and tone guidelines, 5) Content creation and sourcing, 6) Microcopy and UX writing, 7) Content testing (user research), 8) Governance and workflows, 9) Localization and internationalization, 10) Examples. Provide templates and best practices.