Oki 3037 - Manual (Page 368)

ES 3037/3037e Windows NT 4.0 Operation • 368
4. On the Setup tab, under Media , select User Defined Size in
the Size list.
C93_NT_PCL_Custom.tif
The Set Free Size dialog box appears.
NOTE
You may see a Warning dialog box indicating a conflict. If
you do, click OK and the driver will automatically make the
needed changes to correct for the conflict.