Here is the info for the aln alleles from FBrf0256541 Shekhar et al., 2023, Nat. Commun. 14(1): 2932.
alnDelta-Gal4 allele: 
DNA encoding aln amino acids 63 to the C-terminus ( 3L:994313..995549 ) is deleted and replaced by DNA encoding T2A-Gal4.
aln1 allele: 
DNA encoding aln amino acids 196 to 402 ( 3L:994851..995531 ) is deleted and replaced by DNA encoding the attP_loxP_3xP3-DsRed_LoxP3 cassette from Gratz et al Genetics. 2014 Apr;196(4):961-71 (FBrf0224650). 
aln2 allele: 
derived from aln1 by Cre-mediated 3xP3-DsRed removal yielding a deletion of aln amino acids 196 to 402 ( 3L:994851..995531 ) and their replacement by attP and loxP sites. 
aln+t3.6 rescue fragment:
encompasses base pairs  3L:992985..996573 .