Read Only Attribute ReadOnly Purpose Controls whether the driver opens files for Read-Write access or Read-Only access Valid Values 0 | 1 Behavior If set to 1 (Enabled), the driver opens XML files for Read-Only access. In this case, the XML driver opens XML files with a Shared Read lock. This allows other connections and applications to read the same XML file that the XML driver has open; however, they cannot write to the XML file. If set to 0 (Disabled), the XML driver opens XML files for Read-Write access. Opening an XML file for Read-Write access places an exclusive lock on the file. No other connections or applications can open the XML file while the driver has the file open. Default 0 (Disabled) GUI Tab Driver Setup: Advanced tab