Complex sentence: It is generally recognized that this code is not very readable to many programmers today, though it should be noted that the code is "expert friendly," "i.e.," to acculturated VistA programmers it is readable and appropriately structured.
Split into simpler sentences: It is generally recognized that this code is not very readable to many programmers today. Though it should be noted that the code is expert friendly, i.e. to acculturated VistA programmers it is readable and appropriately structured.