I sure love WinMerge. I am using version 184.108.40.206.
But new users I show it to get confused by the coloring in one case: a line with Word Difference coloring uses Difference coloring for unchanged characters. But a completely new line uses Difference coloring for all characters, which are all changed. These don't match.
I think the colors should be swapped for unchanged characters and changed characters, since Difference coloring is being used on non-difference characters. This change would then mean that Difference colors would apply to new lines and changed words, and Word Difference should probably be renamed to Lines With Differences and be used as such.
Thanks for listening,