corregir errores w3c

[galin_86]

Hola a todos
es mi primer post y aunque he buscado no he encontrado lo que necesito.

acabo de pasar el validador w3c y me da todos los errores en los metatags.
son estos:

Error Line 12, Column 46: Bad value revisit for attribute name on element meta: Keyword revisit is not registered.

<meta name="revisit" content="weekly">

Syntax of metadata name:
A standard metadata name or registered extension metadata name. Note that changes to the registry wiki are imported to the validator manually and, therefore, are not reflected in real time.

Error Line 13, Column 48: Bad value Language for attribute name on element meta: Keyword language is not registered.

<meta name="Language" content="Spanish">

Syntax of metadata name:
A standard metadata name or registered extension metadata name. Note that changes to the registry wiki are imported to the validator manually and, therefore, are not reflected in real time.

Error Line 14, Column 48: Bad value geo.region for attribute name on element meta: Keyword geo.region is not registered.

<meta name="geo.region" content="ES-CT">

Syntax of metadata name:
A standard metadata name or registered extension metadata name. Note that changes to the registry wiki are imported to the validator manually and, therefore, are not reflected in real time.

son todos al final de los metas en el cierre (el simbolo ">")
he probado cerrar los metas con /> y solamente con > y el fallo persiste. no lo entiendo sinceramente.
agradezco cualquier tipo de ayuda
gracias a todos por adelantado