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Programming With Navigation Services 1.1

IMPORTANT

During the execution of any application-defined function, do not assume that your application is at the top of the resource chain or that the current heap zone belongs to your application. Use the Resource Manager function UseResFile if you need to set the resource chain. Use the Memory Manager function SetZone if you need to set the current heap zone. For more information on the UseResFile function, see Inside Macintosh: More Macintosh Toolbox . For more information on the SetZone function, see Inside Macintosh: Memory .