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&ascii — ASCII characters
&cset — all characters
&digits — digits
&lcase — lowercase letters
&letters — letters
&ucase — uppercase letters
cset — convert to cset
x++x — compute cset or set union
x––x — compute cset or set difference
x∗∗x — cset or set intersection
~c1 — compute cset complement

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
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Index of Subsystems:
base
digitcnt.icn
SNOBOL4 functions
 
display co-expression variables
 
Description

n display(i, f)
display(i, f) writes the image of the current co-expression and the values of the local variables in the current procedure call. If i is greater than 0, the local variables in the i preceding procedure calls are displayed as well. After all local variables are displayed, the values of global variables are displayed. Output is written to f.
 
Parameters
i
number of procedure call levels to display
f
output file to display results
returns
&null
 
Defaults
i
&level
f
&errout
 
Errors
101 i not an integer
105 f is not a file
205 i0
213 f is not open for writing