Navigation pane closed cannot re-open

[fj1200]

Hi - new user to ASG.  using v-2017

I managed to close the navigation pane and cannot re-open it.  I can access all the servers through the navigation globe icon in a drop-down cascade but it's a real pain and so need the nav pane back - ctl-N does nothing.  Admin -> Navigation does nothing.  

Can anyone assist please?

 <edit>

Fixed it - reinstall restored it.  Now just have to remember not to close it again!

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