This was kind. As Richard Osman says on Pointless, it fell into my lap and I had no difficulty with any of the across clues, and I much enjoyed this gentle but pleasant puzzle from Hieroglyph. When I saw that they all referred to 1D it was clear that solving that clue was going to be important. Fortunately it was easily solvable and everything went in easily thereafter, far more so than it did yesterday in what then seemed to me a rather tricky offering. And there I was, thinking that Tuesdays were more difficult than Mondays.
My apologies for the lack of links: if I’d been really keen I’d have linked to something by each of the 1Ds, but I have recently moved to Firefox and haven’t yet become comfortable with the moving between tabs — previous sites I’ve visited are sometimes up there at the top, sometimes not, and I’m terrified that if I move away I’ll never get back. Actually there is an apology from Firefox up there in a tab at the top telling me that they are having trouble recovering my windows and tabs.
All the definitions in the down clues are underlined. There wouldn’t have been much point in giving the definitions for the acrosses because they are all 1Ds.