???, 167 bytes
"What is this code?"
{1 in!1to100{_1()+l-
t}100l=:!(l,e,t,h)=
"enl_"; _1=func e,n:
print1 if+e||n||$0+
"\n"-_f1_="";#eval;
;;;};"\-";# Author:
main;# @HermanLauenstein
"What is this code?"
{1 in!1to100{_1()+l-
t}100l=:!(l,e,t,h)=
"enl_"; _1=func e,n:
print1 if+e||n||$0+
"\n"-_f1_="";#eval;
;;;};"\-";# Author:
main;# @HermanLauenstein