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added checks for null pointer; print echoes as char or number now (depends on value); all logging goes to stderr now; new nodes blackhole and times (not implemented yet)
Fri, 08 Feb 2008 20:45:17 +0100, by meillo
trivial output improvement
Thu, 07 Feb 2008 18:05:03 +0100, by meillo

less more | rev 5: (0) -2 +2 +10 +30 tip