Commodore PC Ms-Dos 3.2 User's Manual page 312

240 MS-DOS User's Reference
Two examples are shown below.
N
U
WCS:100 1 37 2B
Debug writes out the contents of memory to the disk in drive B:,
beginning with the address CS:100. The data written out starts in
the disk logical record number 37H and consists of 2BH records.
When the write is complete, debug displays the following
prompt:
WCS:100 1 37 2B
u
u
o