You will also find syntax coloring in Eclipse for most languages. You will often find that you can turn on / off underlining and strikethrough in these sections.
For example, when viewing PHP files in Eclipse, you may find that parameter variables are underlined (for example, variables passed to a function). If you find this annoying (like me), go to "Settings" → "PHP-> Editor-> Syntax Coloring", select "Parametric Variables" and "Reject" to the right. I know embarrassment, since underlining is not syntax coloring.
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