@Fiona

The Layout Spellchecker uses Win 8's cross-app built-in Spellchecker.
So a Win 7 equivalent is not possible as that OS has no built-in Spellchecker.
However, I have Win 7 AND I have Spellchecking/Auto-correction in all apps - including Layout AND SketchUp !
This is done using an AutoHotKey tool.
I have actually made it into an exe which then auto-loads from the Startup folder as Win 7 starts.
Then in any app, as I type it is checked and corrected.
I can add new rules using Win_H key combo...
This page explains details and links of to download the ZIP...
http://www.howtogeek.com/howto/45068/how-to-get-spelling-autocorrect-across-all-applications-on-your-system/
The AutoHotKey main page itself:
http://www.autohotkey.com/
There are other similar 'Spellcheck' tools in AHK too, but I just like this one...

Ciao, non ho SU2013 installato in questo momento, ma ho letto che in alcune prime versioni (hai aggiornato il programma?) le toolbars dei plugin potevano essere nascoste da altre toolbars già presenti. Prova a spostare le icone che hai nello spazio di lavoro e guarda se sotto compaiono quelle dei plugin che non riesci a vedere.

thank you, dave!
(I apologize but I had not tried to look the word 'tip')

I don't like the fact that there is no AppStore link. This leaves me to conclude that this app will be pretty pricey. 😲