That’s a lot of lines 
. Imagine splitting your 1000 lines into chunks of 39…
So gfortran allows at least 1000 &-characters as an extension. I tried and it only issues a warning when compiling with ```-std=f2008``` (or later).
Warning: Limit of 255 continuations exceeded in statement at (1)
For ifort, the limit is at 511. Are there any higher offers?