Among the highlights on Positive Thinking are the hypnotic, gently percussive "Passionelle" (whose rhythm scheme recalls their classic "Reference Point"); "Rainwatching W.I.", a thoughtful reflection on a rainy day in London;
...words taken from the review of Positive Thinking on the In Memoriam for Nick Webb page, on this very forum:
Confirmed at the Town Crier show last night that Rainwatching W.I stands for the West 1 london section. Nick had a flat there and would stare at the rain from his place thus the name of the beautiful song.