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Sample of code highlighted with SyHi. See how the other text is unaffected by the quote-preserving feature, and hence is fully texturized (dashes, curly quotes, you name it!)

Sample of code with and without highlighting, using the default kubrick theme. Notice how the first snippet is totally ruined, because it doesn't use the code tag. The second one is beatifully colored and all problematic characters are preserved. Notice also that the snippet gets a scrollbar if the lines are too wide for the column width.