Hook name: twentyfifteen_custom_header_args Hook type: filter Plugin ref: Twenty Fifteen Sourcefile: File ref: twentyfifteen_custom_header_setup() – Set up the WordPress core custom header feature. Description: Parameters: Deprecated?: No API Letters: A,C,H,T Invokers 1 to 1 of 1 twentyfifteen_custom_header_setup() – Set up the WordPress core custom header feature. Implementers