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Search results:
&fail — failure
break — break out of loop
case of — select according to value
create — create co-expression
every do — generate every result
expr & expr — evaluate in conjunction
expr \ i — limit generator
expr1 | expr2 — evaluate alternatives
fail — fail from procedure
if then else — select according to outcome
link — reference ICON module
next — go to beginning of loop
not — invert failure
repeat — evaluate repeatedly
return — return from procedure
s ? expr — scan string
suspend do — suspend from procedure
until do — loop until result
v op:=x — augmented assignment
v:=:v — exchange values
v:=x — assign value
while do — loop while result
x!X — process argument list
x(x,…) — function call
x{x,…} — process argument list as co-expressions
|expr — evaluate repeatedly

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