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# system\packages

This directory contains various utility packages.

autocode\grid | grid autocode
color\cfmt | color formatter
color\cfmtfns | color fmt functions
color\color16 | table of 16 primary colors supported by HTML
color\colortab | colortable used in J (from Internet Explorer)
color\ns216 | Netscape primary colors (256 color table)
color\ntcolor | name that color (displays color table)
color\rgb | convert between color triples and RGB values
color\wdcolor | color table for wd 'qcolor'
color\xwin | X Windows color table
dde\server1 | Sets up J as a hot-link DDE server.
dde\server2 | Sets up J as a cold-link DDE server.
files\csv | CSV file access utilities
files\dbase | dBASE file access utilities
files\jfiles | Component File definitions
files\keyfiles | Keyed-file definitions
files\kfiles | Older keyed-file definitions (superceded by keyfiles.ijs)
files\nfiles | file read/write in various formats
finance\actfns | actuarial functions
finance\actutil | actuarial misc utilities
finance\interest | interest functions
graphics\bmp | supports bitmap files
graphics\gnuplot | supports gnuplot for Windows
graphics\gputil | gnuplot utility functions
graphics\isigmain | supports graphics using the isigraph control
graphics\isigraph | loads all isigraph files
graphics\isigutil | isigraph utilities
graphics\vkeys | vkey definitions
math\bigpi | calculate several digits of pi
math\brent | Brent's method in J
math\det | definitions for determinants
math\fermat | fermat - find factor of n near square root
math\gcd | calculate GCD
math\integer | various integer definitions
math\integrat | various methods for numeric integration
math\jacobi | jacobi's method for eigenvalues and vectors
math\legendre | legendre symbol and quadratic residues
math\linear | solve linear equations
math\makemat | make various matrices
math\matfacto | matrix factorization
math\mathutil | math utilities
math\matutil | matrix utilities
math\mean | various means
math\numbers | various number definitions
math\pollard | Pollard factorizations
math\poly | polynomial functions
math\primutil | prime testing programs
math\quatern | definitions for quaternions
math\spline | calculate cubic spline
math\svd | singular value decomposition
misc\datefmt | date formatters
misc\evolute | calculate evolutes
misc\fgh | displays calling sequence for J expressions
misc\fields | symbolic field indexes and access functions.
misc\ieee64 | IEEE 64 bit representation of real number
misc\primitiv | names for primitives
misc\rtfview | view rtf text in richedit control
misc\telecom | serial port I/O API cover functions
misc\vkeyshow | shows vkey names
misc\xenos | suggested names for external conjunctions
ocx\graph | GraphLib definitions
ocx\ocxutil | Utilities for OCX controls
print\label | print labels
print\laserjet | LaserJet utilities
print\print | print package
print\printn | prints text in n columns on a page
print\write | write package
regex\regbuild | utilities for building regular expressions
regex\regdemo | regular expression demo
regex\regj | nouns for applying regular expressions to J code
regex\regjbld | build regular expressions for J code
stats\random | various random utilities
stats\statdist | Statistical Distributions
stats\statfns | Statistical functions
stats\stats | load statistics files

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