302 ;;Quote: the Smalltalk virtual image is about 300K bytes of objects; needs 6-12K of assembly code

302+;;Quote: the Smalltalk virtual machine is 6-12K bytes of assembly code; 40% memory management, 20% interpreter, 40% primitives

302 ;;Quote: Smalltalk uses an object id to access an object through a table; allows objects to move in memory

304 ;;Quote: Smalltalk-80 uses 16-bit object ids

304 ;;Quote: a Smalltalk record for a point contains fields for size, class pointer, and pointers to objects for x and y coordinate

306 ;;Quote: Smalltalk-80 uses reference-counting for garbage collection

308 ;;Quote: Smalltalk sent messages by pushing pointers for receiver and argument objects on the stack; replaced by pointer to returned object

316 ;;Quote: Smalltalk-80 assigned a method dictionary to each class-describing object; associates selectors with methods

318 ;;Quote: Smalltalk 80 based on about 100 primitive subroutines; allows rest of system to be flexible and extensible

320 ;;Quote: in Smalltalk, high frequency methods implemented as a bytecode instead of dictionary lookup