[Plugin: NextGEN Gallery] NextGen next/previous arrow keys –

Hello – I am using the new version of NextGen v1.3.2 gallery with v2.7.1 of WordPress. Everything seems to be OK to point. An album image shows on the page and slecting it opens all the photos inside on the screen. If you select one of the photos it opens and the message states – click to close an image (works), click and drag to move)works), use arrow keys for next/previous (what?).

What or where are the arrow keys that it is talking about?

Did I miss something in installation? I looked / scanned and tried to figure but – lost

Any help would be appreciated.

Regards
George