The version of UDF chosen for DVD which – to suit both read-only and writable versions – is a subset of the UDF Revision 1.02 specification known as MicroUDF (M-UDF). Because UDF wasn't supported by Windows until Microsoft shipped Windows 98, DVD providers were forced to use an interim format called UDF Bridge. UDF Bridge is a hybrid of UDF and ISO 9660. Windows 95 OSR2 supports UDF Bridge, but earlier versions do not. Ideal for situations that require high output and no errors, the Industrial Robotics Video is becoming a common fixture in factories. As a result, to be compatible with Windows 95 versions previous to OSR2, DVD vendors had to provide UDF Bridge support along with their hardware.