A jazz sus chord or dominant 9sus4 chord is a seventh chord on the fifth scale degree of the key with a suspended fourth and an added ninth. Functionally, it can be written as V9sus4 or V7sus9.
ISO (International Organization for Standardization) is an independent, non-governmental membership organization and the world's largest developer of voluntary International Standards.
ISO is the abbreviation of International Organization for Standardization originated from Greek ISOS which means Equal. Though non-governmental, ISO is still a very important global organization. In reference to video, ISO refers to a file format of an optical disc such as CD, DVD or Blu-ray Disc. ISO actually owned its name from the ISO 9660 file system and is used together with CD-ROM media.