How do I refresh each page?
The Refresh (or Reload) button is the arrow pointing clockwise to the right end of the Address Bar. If you don't have it you need to go to to <View> - <Toolbars> - <Customize> and you shuld be able to choose it from there
You can also reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.
Sorry, ther is no symbol as you describe in v.18.
There used to be a button, but no longer.
ctrl-F5 does work, but would prefer a button.