I did have a quick play with that, Pete, but I found it very confusing (I do get confused easily, and often=)
Half the sliders were greyed out for reasons I didn't understand, and there wasn't much in the way of idiots guides online.
After feeling frustrated by it, and not being keen of buying or renting Lightroom and/or Photoshop, I saw a lot of talk about Affinity photo and quite a few guides to actually using it, I splashed out (mostly because it was on offer). So far so good. It seems very comprehensive, and complex, but the simple stuff that I need does seem pretty easy so far.