Judicious Editing

I was rather proud of this edit to a co-worker's document which improved flow with a minimum of additional words and little alteration of the actual text.

"For a random read the most common action is reading the corresponding shadow register. That being the case its function pointer is assigned a NULL pointer. A NULL tells the code to return the value of the shadow register array indexed by the command."
Changed to
"The Random Read command's most common action is to read the corresponding shadow register, so its function pointer is assigned a NULL, which tells the code to return the value of the shadow register array indexed by the command."