Search ('all' for everything):

Search results:
!x — generate values
&allocated — cumulative allocation
&collections — garbage collections
&features — implementation features
&regions — storage regions
&storage — storage utilization
?x — generate random value
bal — locate balanced characters
every do — generate every result
expr \ i — limit generator
expr1 | expr2 — evaluate alternatives
find — find string
function — generate function names
i to i by i — generate integers in sequence
key — generate keys from table
seq — generate sequence of integers
suspend do — suspend from procedure
upto — locate characters
v<–>v — exchange values reversibly
v<–x — assign value reversibly
|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