The item and noticeboard modified counts will not be incremented if INCREMENT_MODIFY is FALSE.
Note that this routine only alters the specified number of bytes starting at the specified offset -- all bytes are initially zero and bytes above and below those that are being altered will not be affected. The actual size of the item will be adjusted upwards if the new data extends past the previous end of the data but the size of the item cannot be decreased by this routine. To alter the size of an item, use the NBS_PUT_SIZE routine.
NBS__NILID NIL ID
NBS__NOTPRIMITIVE Item is not primitive
NBS__NOTOWNER Caller does not own the noticeboard
NBS__BADOFFSET Negative offset specified
NBS__TOOMANYBYTES Not room to put all the data
NBS The Noticeboard System