Thanks for the reply. I don't have Snowflake Pro, but I do have The Novel Factory which incorporates the Snowflake method. Scapple is a lot simpler than the usual mind mapping software in that it is totally free form; you just double click on the screen and type a note anywhere then if you want to join it to another you 'sit' one on top of the other and a dotted line appears between them. Mind maps tend to have a structured way of joining together: parent and child nodes etc, which Scapple frees you from.
Last night, while browsing the web for a free downloadable prompt program (I have Mikkomatrix but feel the need for something more), I came across The Storymatic Classic and just HAD TO have it!! If you've never heard of it, here's the Amazon link:
https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1
I'll never be short of ideas again, not that I am, but there are times when my fingers twitch to get writing but I just can't think of anything decent to write.
And there's always the hope that somehow these tools will magically make me a better writer.