nValue

Address of a long integer that receives the current value of the tag designated in uTag. If the value pointed to by nValue is ISIS_DEFAULT [-99], then the scanner's default for the tag designated by uTag will be used for scanning. For example, if the value pointed to by nValue is ISIS_DEFAULT and uTag is TAG_COMPRESSION, then the scanner's default setting for compression will be used for scanning, unless the value pointed to by nValue is set to another value using the ISISSetTag method.