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GN_Opf, file or stream open
GN_Cl, close file
GN_Del, delete a file from memory
GN_Ren, rename file
OS_Cl, internal close (OZ usage)
OS_Del, file delete (OZ usage)
OS_Frm, file read miscellaneous
OS_Fwm, file write miscellaneous
OS_Gb, get byte from file (or device)
OS_Gbt, get byte from file (or device) with timeout
OS_Mv, move bytes between stream and memory
OS_Crc, get CRC–32 of open file (OZ V4.5 and newer)
OS_Op, internal open (OZ usage)
OS_Pb, write byte to file, device
OS_Pbt, write byte to file, device with timeout
OS_Ren, file rename (OZ usage)
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OS_Ploz, Poll for running OZ
OS_Off, Switch machine off
OS_Blp, Bleep generation
OS_Sr, Page Wait
OS_Crc, get CRC–32 of ressource (OZ V4.5 and newer)
Persistent Memory Cards
OS_Epr, File Card Interface (extended API in OZ V4.2)
OS_Fep, Flash Card Interface (OZ V4.2 and newer)
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OS_Bix, bind in extended address
OS_Box, restore bindings after OS_Bix OS_Fc, select fast code (fast bank switching)
OS_Mal, allocate memory
OS_Mcl, close memory (free memory pool)
OS_Mfr, free (previously allocated block) memory
OS_Mop, open memory (allocate memory pool)
OS_Crc, get CRC–32 of local memory area (OZ V4.5 and newer)
Integer conversion
GN_Gdn, convert an ASCII string to a binary number
GN_Pdn, write number as decimal ASCII string
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