Katana - How do you clear 'most recent messages'?

Does anyone have any idea how to clear the 'most recent messages' on a Katana? I prefer to keep my text messages blank...

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okay from the main screen

press menu/ok button
number 2
number 2 again
options button
erase messages
then click the ones you want
then click done, and it erases them all

hope this helps.