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hyphenated compounds
When capitalization is called for, always capitalize the first element. Capitalize the second element if it is a noun or a proper adjective or if it has equal force or value of the first element.
The Role of School-Community Relations in the Urban Setting.
The Height-Weight Factor in Stabilizing Widgets.
The English-speaking People.
The Twenty-first Annual Meeting of the Socialist Union.
Source 
Capital letters in a title... 
Linear Mode
