Search ('all' for everything):

Search results:
[x1, …] — create list
copy — copy value
delete — delete element
get — get value from list
insert — insert element
key — generate keys from table
list — create list
L|||L — concatenate lists
member — test for membership
pop — pop from list
pull — pull from list
push — push onto list
put — put onto list
set — create set
sort — sort structure
sortf — sort structure by field
table — create table
x!X — process argument list
x++x — compute cset or set union
x===x — value equal
x[i+:i] — produce substring or list section
x[i-:i] — produce substring or list section
x[i:i] — produce substring or list section
x[x, …] — multiple subscript
x[x] — subscript
x~===x — value not equal
x––x — compute cset or set difference
x∗∗x — cset or set intersection

Index of Function Types:
affects &pos
character sets
co-expressions
control structures
file processing
generators
infix operations
keywords
lists, sets and tables
math
metadata
output formatting
pattern matching
prefix operations
records
strings
windows and keyboards

Index of Subsystems:
base
digitcnt.icn
SNOBOL4 functions