Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 894)

C H A P T E R 2 6
Utility Functions
26-4 Compatibility
New Integer Math Functions 26
The following new functions related to integer math have been added.
GetRandomState
SetRandomState
New Financial Functions 26
The following new functions that perform operations related to the currency
exchange rate have been added.
GetExchangeRate
SetExchangeRate
GetUpdatedExchangeRates
New Exception Handling Functions 26
The following new exception handling function has been added.
RethrowWithUserMessage
New Message Sending Functions 26
The following new utility functions for sending immediate messages have
been added.
IsHalting
PerformIfDefined
ProtoPerform
ProtoPerformIfDefined
New Deferred Message Sending Functions 26
The following new utility functions for delayed and deferred actions have been added.
AddDeferredCall
AddDelayedCall
AddProcrastinatedCall
AddDeferredSend
AddDelayedSend
AddProcrastinatedSend
These new functions replace AddDelayedAction and AddDeferredAction
(although both remain in the ROM for compatibility with existing applications).
These two older functions have several problems, and you should not use them—
they will likely be removed in future versions of system software.