RISC OS owner attributes are mapped to and from SIBO or EPOC read only (or not writable) and system attributes as follows:
| RISC OS | SIBO or EPOC |
|---|
| read only | system |
| / | | |
| R/ | Yes | |
| W / | | |
| WR/ | | |
| L / | Yes | |
| L R/ | Yes | Yes |
| LW / | | Yes |
| LWR/ | | Yes |
RISC OS public attributes are mapped to and from SIBO or EPOC archive (or modified) and hidden attributes as follows:
| RISC OS | SIBO or EPOC |
|---|
| archive | hidden |
| / | | |
| / r | | Yes |
| /w | Yes | Yes |
| /wr | Yes | |
This mapping preserves all SIBO or EPOC attributes except for the system attribute of directories, which is converted to read only due to limitations of RISC OS filesystems. |