h : sort hierarchy parameter
i,j : local reference depth (de Bruijn's)
k,l : global reference level
-m :
-n : type iterations
-o : sort degree parameter
+m,n : iterations
+o : sort degree parameter (origin)
p,q : binder polarity
-r : reduction kind parameter (true = ordinary, false = extended)
+r :
s : sort index
t,u :
v,w : local reference position level (de Bruijn's) (RTM)
T: boolean true
a: application
-b: binder
+b: generic binder with one argument
d: abbreviation
-f: flat
-l: abstraction
+f: generic flat with one argument
+i: generic binder for local environments
+l: typed abstraction
n: native type annotation
+u: generic binder with zero argument
+x: exclusion
NAMING CONVENTIONS FOR TRANSFORMATIONS AND RELATED FORMS