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OS_Alm, alarm manipulation (OZ usage)
GN_Aab, allocate alarm block
GN_Alp, process an expired alarm
GN_Fab, free alarm block
GN_Lab, link an alarm block into the alarm chain
GN_Uab, unlink an alarm block from the alarm chain
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DC_Nam, Name current application
OS_Poll, poll for an application (OZ usage)
DC_Pol, poll for card usage
OS_Ent, enter an application (OZ usage)
DC_Ent, enter new application (low level OZ usage)
OS_Exit, exit an application (OZ usage)
DC_Bye, exiting current application (OZ usage)
OS_Bye, exit application
OS_Stk, stack current process / application (OZ usage)
OS_Use, process card usage (OZ usage)
Arithmetic
GN_D16, 16bit unsigned division
GN_D24, 24bit unsigned division
GN_Gdn, convert an ASCII string to a binary number
GN_M16, 16bit unsigned multiplication
GN_M24, 24bit unsigned multiplication
GN_Pdn, write number as decimal ASCII string
FP_ Floating point arithmetic
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OS_Mgb, get old bank binding
OS_Mpb, set (put) new bank binding
OS_Fc, fast code (bank binding)
OZ_Mgb, get old bank binding (ultra fast routine in LOWRAM, OZ V4.1 and newer)
OZ_Mpb, set new bank binding (ultra fast routine in LOWRAM, OZ V4.1 and newer)
Characters
GN_Cls, classify a character
GN_Skc, skip character
GN_Skd, skip to delimiter
GN_Skt, skip to value
CLI
DC_Icl, invoke new CLI
DC_In, read from CLI
DC_Xin, examine CLI input
DC_Rbd, rebind streams in CLI layer
OS_Cli, CLI interface (OZ usage)
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GN_Cl, close file
OS_Cl, internal close (OZ usage)
GN_Flc, close filter
OS_Mcl, close (free) memory pool
GN_Wcl, close wildcard handler
Dates
GN_Gdt, convert ASCII to internal date
GN_Dei, convert zoned format date to internal format
GN_Die, convert internal format date to zoned format
GN_Gmd, get (read) machine date in internal format
GN_Pdt, write internal date as ASCII string
GN_Pmd, put (set) machine date
Delay
OS_Dly, fixed time delay
DOR manipulation
OS_Dor, DOR interface
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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