[AmigaOS / ApolloOS Command Reference\Stack] 
 
 
 STACK
 
  
 Format:	STACK [<stack size>] 
  
 Template:	SIZE/N 
  
 Purpose:	To display or set the stack size within the current Shell. 
  
 Path:		Internal 
  
 Specification: 
  
 When you run a program, it uses a certain amount of stack, a special area in 
 memory allocated for the program. The stack required for a program should be 
 given in the program's documentation. However, if a program causes a system 
 failure, you may wish to experiment with various stack sizes. 
  
 Commands that perform operations that consist of multiple levels may require 
 additional stack space. 
  
 Stack sizes generally range from 4000 to 25,000 bytes. If the stack size is 
 too small, a system failure may occur. Too large of a stack size may take 
 too much memory away from other system functions. 
  
 CautionIf you  run out of stack space, you  may receive a Software 
 Failure message. If you have altered the stack for the program that caused 
 the Software Failure message, try increasing the stack size.