I magnify the screen, then clicked View/Full Screen. Now menu bar is hidden.
I usually have to magnify web pages to see better. I also clicked View / Full Screen. Now I can only use the keyboard.
What are the commands to reverse this ?
Alla svar (2)
The F11 key switches between normal view and full screen view.
Or you can move the mouse pointer all the way to the top of the screen, right-click, and choose Exit Full Screen Mode from the little context menu.
Does that solve it?
As you've no doubt noticed, Firefox's zoom feature works on a site-by-site basis. You can zoom all sites' using this add-on: NoSquint. After setting your Global zoom level, you can still fine-tune the zoom on individual sites.
After installing NoSquint, click the % on the Add-on Bar to call up site preferences, then click the Global Settings button, then the Zooming tab.
If you don't have the Add-on Bar displayed, you can right-click the new tab button ("+") or a blank area of the tab bar to the right of it and choose Add-on Bar from the shortcut menu.
You can experiment with sizes larger than 125%, but I wouldn't go much higher than 150% unless you have a large high-resolution monitor.
Hope this helps.
