[WriteLog] What is it

[Dennis]

I was going to wait for the RTTY contest this weekend to put WL to the test but could not pass up the 160 cw contest.  Anyway, I opened the CW window and it works very well but I have a question.  When I move the curser up there a plus sign and a little box appears.  Can someone tell me what the plus (+) sign and the little box that follows it around are for?

Thanks,
Dennis  AB8NI