`THTTPHeader`
pt		IndexToHTTPHeader
pt		IndexToHTTPVariable
pt		GetFieldValue
pt		SetFieldValue
pt		ParseFirstHeaderLine
pt		ParseCookies
		Create
		Destroy
		HeaderIsSet
		GetHeader
		SetHeader
		SetFieldByName
		GetFieldByName
		GetVariableHeaderName
		GetVariableHeaderType
		ParseContentType
		GetCustomHeader
		SetCustomHeader
		LoadFromStream
		LoadFromStrings