actualize
   list-del

with
   string-data


   
by morphism
   :list → path; 
   :elem → string; 
   [] → ε; 
   .butlast → parent prio 0; 
   mklist → mkpath; 
   + → +; 
   .first → .first; 
   .rest → .rest; 
   # → #; 
   ' → '; 
   + → +; 
   + → +; 
   + → +; 
   ++ → ++; 
   rmdup → rmdup; 
   .last → .last; 
   butlastn → butlastn; 
   rev → rev; 
   fillfirst → fillfirst; 
   -l → -l; 
   -1l → -1l; 
   -1l → -1l; 
   [ ] → [ ]; 
   pos → pos; 
   [ ] → [ ]; 
   sublist → sublist; 
   firstn → firstn; 
   restn → restn; 
   lastn → lastn; 
   frome → frome; 
   < → <; 
   ∈ → ∈; 
   dups → dups; 
   disj → disj; 
   ⊑ → ⊑; 
   ⊒ → ⊒; 
   x → p; 
   x0 → p0; 
   x1 → p1; 
   x2 → p2; 
   y → q; 
   y0 → q0; 
   y1 → q1; 
   y2 → q2; 
   z → p'; 
   z0 → p3; 
   z1 → p4; 
   z2 → p5; 
   a → str; 
   b → str0; 
   c → str1; 
   a0 → str2
end actualize