This article describes common functionality that is often thought lacking in ksh but is just hiding in unintuitive corners (such as command line completion!)
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What if you have found a nice image that you want to use on your site but it does not match your colour palette? Or, what do you do if you have decided to change the colour palette of your site but you do not want to change your graphics? This article explains some simple things you can do in GIMP to solve your problem.