I'm not sure whether basic formatting cleanup belongs in 3.6.1, but
there are also a couple of strings that got split and require the
implicit concatenation of adjacent string literals introduced with
C89/C90. The code itself compiles with pre-ANSI compilers, or at
least used to--most of it was developed with one....
Much of it is tabs in comments. But there was one substantive item:
an obsolete reference to "use 'Q' to Quit" after however many years....
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