Operations and Setting Status Bits

The operations affected by locked regions, and the status bit settings are

 
Operation

Source
Region Status Bit

Destination
Region Status Bit

Add Item

in_lock

N/A

Insert Item

in_lock

N/A

Delete Item

out_lock

in_lock

Fetch Item

out_lock

in_lock

Move Item

out_lock

in_lock

Advance Item

out_lock

in_lock

More information

Step 3. Auto-lock regions.