Please note only one of these 3 clues is an ordinary clue, and two are "specal"
1d Hear collapsing building went over again (5) _ E _ E _
15d Only slightly moving, like old poems one's held up (4-5) _ E _ I / _ I _ I _
23 Little less cryptic clue (5) _ C _ L _
NB The special clues have their input adjusted. They parse correctly but then need to be adjusted. They all include a keyboard symbol that is spelled out but then when input the actual symbol is input instead of the letters
eg Notice books around study for US tennis champ (4,2) parses as BILL TILDEN
Bill (notice) + til (lit/books around) den (study) = Us tennis champ (Bill Tilden)
BUT it is (4,2) because it is input as BILL ~N ie (bill + (tilde)N
Many thanks - that means the other two are the special clues
I wondered whether re (check) ed or re (cross)ed but have no idea why "collapsing building"