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for sure you're able to modify the recent news block template and add your content there on the place you want. the code calling the recent artcles should be done in a cycle, so you'll have to break that cycle in two parts and add your content between them. it would be better not to change the module's block template, but just copy its code in a custom block and modify it as you need there, and show that custom block on your page, but not the original one.