The little "x" when selecting a memory

Here's another little helpful feature that you might not have noticed.

After you have dialed up a frequency into the display register, and then press F+MR to program it into a memory slot, the display may have a little tiny "x" next to the memory number (just to the right).

The little "x" means that the memory slot is not currently empty. If there isn't an "x", the memory is presently empty.