Sets the NDF history update mode
The level is called the history update mode and it is a permanent attribute of the HISTORY component of the NDF, and remains with the NDF and any NDF created therefrom until the history is erased or the update mode is modified (say by this task).
"Disabled"
–- No history recording is to take place.
"Erase"
–- Erases the history of the NDF.
"Normal"
–- Normal history recording is required.
"Quiet"
–- Only brief history information is to be recorded.
"Verbose"
–- The fullest-possible history information is to be recorded.The suggested default is "Normal"
. ["Normal"]
TRUE
lets the history records be erased; if OK=FALSE
the history is retained and a message
will be issued to this effect. A HISTORY component is created if it does not exist within the NDF, except for
MODE="Erase"
.
The task records the new history update mode within the history records, even if
MODE="Disabled"
provided the mode has changed. Thus the history information will show
where there may be gaps in the recording.