Search ('all' for everything):

Search results:
!x — generate values
+N — compute positive
-N — compute negative
.x — dereference variable
/x — check for null value
=s — match string in scanning
?x — generate random value
@C — activate co-expression
\x — check for non-null value
^C1 — create refreshed co-expression
|expr — evaluate repeatedly
~c1 — compute cset complement
∗x — compute size

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