I am getting so brave thanks to Nabble, but I'm not sure if this is correct...
I used
'But what about footwear?' > Options > Twitter button... The post went in OK but I was expecting the link to appear as a shortened Twitter(?) version as opposed to the full link.
Edit1: Just noticed that there is a short Twitter link in the screen tab, but not in the tweet.
Edit2:
My Twitter link
Anne