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DOR manipulation
OS_Dor, DOR interface
Executable and Linkable Format (ELF)
DC_Elf, ELF low level interface (OZ usage, OZ 5.0 and newer)
DC_Rte, return from ELF (OZ usage, OZ 5.0 and newer)
GN_Elf, enter ELF program (OZ 5.0 and newer)
Errors
GN_Err, display system error box
GN_Esp, return an extended pointer to a system error message
OS_Erc, get error context
OS_Erh, set error handler
OS_Esc, examine special condition
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OS_Bhl, copy bytes from extended address
GN_Cme, compare null-terminated strings, one local, one extended
GN_Rbe, read byte at extended address
GN_Wbe, write byte at extended address
OS_Bde, copy bytes to extended address
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GN_Nln, send newline (CR/LF) to standard output (deprecated)
GN_Soe, write string at extended address to standard output (deprecated)
GN_Sop, write local string to standard output (deprecated)
OS_Bout, write string at extended or local address to standard output (OZ V4.2 and newer)
OS_Hout, write a hexadecimal byte to std. output (OZ 4.5 and newer)
OS_Nln, send newline (CR/LF) to standard output (OZ 5.0 and newer)
OS_Out, write character to standard output
OS_Pout, write embedded string at PC to standard output (OZ V4.2 and newer)
OS_Prt, output character to printer
OS_Sout, write local string to standard output (OZ 5.0 and newer)
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