When documenting programming languages we commonly include code snippets within the documentation to illustrate how to go about doing something. In HTML this would usually include <PRE> or <CODE> tags to inform the browser that we want to see this snippet in a non-proportional font with the white space preserved.

However, modern programming tools go one better and now markup this text with colour to assist with readability. So, rather than just displaying a block of black text they display something like this:

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Anything else you can tell me about peoples favorite DITA editing tool would be appreciated, like how many organisations use it.

Thanks in anticipation.