In sitetree.php I found how the metadata-thingy that is there is created. I suspect one can use it to create ones own. The next question is: How can one remove it? Anybody?
Thnx!
ToggleCompositeField::create('Metadata', _t('SiteTree.MetadataToggle', 'Metadata'),
array(
new TextField("MetaTitle", $this->fieldLabel('MetaTitle')),
new TextareaField("MetaKeywords", $this->fieldLabel('MetaKeywords'), 1),
new TextareaField("MetaDescription", $this->fieldLabel('MetaDescription')),
new TextareaField("ExtraMeta",$this->fieldLabel('ExtraMeta'))
)
)->setHeadingLevel(4)