to be fully conformant, the content should also include a set of xml schema definition files (.xsd and .dtd files) that formally describe the xml grammar contained within the manifest, including any extensions that may have been used. (download the scorm manifest schema definition files).

Write the above sentence using proper case.
To be fully conformant, the content should also include a set of XML schema definition files (.xsd and .dtd files) that formally describe the XML grammar contained within the manifest, including any extensions that may have been used. (Download the SCORM manifest schema definition files).