scmJS docs

UPUS

Which of the 64 UPRP slots StarEdit considers in use. The game does not read it.

Name UPUS (55 50 55 53)
Size 64 bytes.
Read by Editors only. The game skips it.
Required No.
More than one copy Only the last copy counts.
In scmJS Read, and written again when you change what it holds.

Layout:

Offset Type Holds
0 u8 × 64 Per slot: 1 if StarEdit considers it in use