- Entry:
- MOD
- Event:
- MODIFY TOPO operator command
- Modules Generating Entry:
- ISTTROMT
This trace record is issued when the MODIFY TOPO command
with the FUNCTION=QUIESCE or FUNCTION=NORMAL operand is entered by
an operator. 
- Byte (hex)
- Contents
- 00–02
- Record ID: C"MOD"
- 03
- Action
- C"Q" FUNCTION=QUIESCE
- C"N" FUNCTION=NORMAL
- 04–06
- Flag bytes from the CV4580
- 07
- Number of days left before NDREC is garbage collected
- 08
- Flag byte
- Bit
- Meaning
- 11.. ....
- Node type from NDREC
- B'00'
- End node
- B'01'
- Network node
- B'10'
- Virtual node
- ..1. ....
- Garbage collection indicator from NDREC
- ...1 ....
- Adjacent node indicator from NDREC
- .... 1...
- DLUR end node indicator from NDREC
- 09
- Scope of the MODIFY TOPO command
- C"L" SCOPE=LOCAL
- C"N" SCOPE=NETWORK
- 0A–17
- 0
- 18–1B
- Resource sequence number from CV4580
- 1C–1F
- First word of timestamp for trace entry