In my current Image

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C:\Smalltalk\Squeak5.1-16549-64bit-201608180858-Windows\Squeak5.1-16549-64bit-201608180858-Windows\Squeak5.1-16549-64bit.4.image

Squeak5.1

latest update: #16551

Current Change Set: Example

Image format 68021 (64 bit)

I am studying class #Object. 

The class comments identify two Class Variables:

but the class definition only defines  DependentsFields.

Thanks,

jrm