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Thanks a lot. I am so sorry for asking such a silly doubt... I swear I searched everywhere but I just didn't know it worked like that. It looks just fine now

Hello everyone.
First of all I'd like to say sorry if my English is not perfect, I am Spanish.
I am using Kile in a Fedora distribution (also tried it in Kubuntu).
My problem is the following, whenever I use a mathematical symbol, the text after it just appears to be in italics and inserted in the ...