What is the easiest way to shift a wave up?

I have this wave at:

http://server3.uploadit.org/files/mike7411-movwavup.JPG

For some reason, it is below the time axis.

I can't find the option to move it up. Anyone know?

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What is the easiest way to shift a wave up?

I have this wave at:

http://server3.uploadit.org/files/mike7411-movwavup.JPG

For some reason, it is below the time axis.

I can't find the option to move it up. Anyone know?

The feature you're looking for is called "DC Bias" reduction, or adjustment.

If you can't find a DC bias adjustment, look for a high pass filter. Set the
corner frequency to 20 Hz or below.