Full frame Full frame - the effect of an illuminated image which completely fills the display both vertically and horizontally reference: First version after conversion of P/META into XML Valid 4:3 reference: First version after conversion of P/META into XML Valid 16:9 reference: First version after conversion of P/META into XML Valid Stretched reference: CableLabs mapping Valid Pan and scan reference: CableLabs mapping Valid Letterbox Letterbox - the effect of an illuminated image which, when filling a display completely horizontally does not fill the display vertically reference: First version after conversion of P/META into XML Valid 14:9 reference: First version after conversion of P/META into XML Valid 16:9 reference: First version after conversion of P/META into XML Valid 16:9 Anamorphic reference: First version after conversion of P/META into XML Valid 7:3 Panavision or Cinemascope reference: First version after conversion of P/META into XML Valid Pillarbox Pillarbox - the effect of an illuminated image which, when filling a display completely vertically does not fill the display horizontally e.g. when displaying 4:3 content on a 16:9 display reference: First version after conversion of P/META into XML Valid 4:3 reference: First version after conversion of P/META into XML Valid