Search ('all' for everything):

Search results:
&current — current co-expression
&main — main co-expression
&source — source co-expression
@C — activate co-expression
^C1 — create refreshed co-expression
create — create co-expression
display — display co-expression variables
x@C — transmit value to co-expression
x{x,…} — process argument list as co-expressions

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