Help regarding changing preferences on myLot.

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This may seem like a silly little question but I can't find the answer anywhere in the maze of instructions here! I tried to post a response to a discussion and included the word "s*x" in my response. I got an alert saying that I had chosen to not allow content like that in my discussions or responses - something to that nature - and suggested either changing what I said or changing my preferences to allow mature content. I looked - clicked on - preferences - and searched everywhere - yet I can't find anything to change this. If someone here knows, please help!