ao tentar copiar e colar texto do mesmo documento aparece a mensagem "go to next page"

Thank you for  the quick answering Jeff.   It seems memory problem. I closed and opened again the file and the problem disappeared. I think my 4GB of memory is not enough for the kind of documents that i'm working, so this appears like a solution until i get more memory.

Any way i'd like to know if, in FM, there is a command to clear memory, like in Illustrator and Photoshop. Thanks.