Understanding other
people's programs

The layout of the programs we have presented in our discussions has been very simple and we have used only the instructions found in the Instruction Set.
But unfortunately many programmers have provided programs on the internet that are presented in a complex way, using instructions that need additional explanation.
Unless you know the function of every instruction in a program, it is worthless. Even a single new or unknown instruction can render a program uninterpretable.
We have tried to avoid this situation as the slightest deterrent can put a student "off."
That's why we have made everything so simple.
However many students will be looking at other programs and will come across this frustrating situation.
Here are a few notes on reading lines of code outside the standard set.  

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