?package(calc):needs="dwww" section="Apps/Math" title="Calc" \
 longtitle="An advanced calculator and mathematical tool for Emacs." \
 description="This is an advanced calculator and mathematical tool for GNU \
 Emacs.  XEmacs has calc built-in, so you only need this package if you \
 are using GNU Emacs.  Very roughly based on the HP-28/48 \
 series of calculators, calc's many features include: \
    * Choice of algebraic or RPN (stack-based) entry of calculations. \
    * Arbitrary precision integers and floating-point numbers. \
    * Arithmetic on rational numbers, complex numbers (rectangular and \
      polar), error forms with standard deviations, open and closed \
      intervals, vectors and matrices, dates and times, infinities, \
      sets, quantities with units, and algebraic formulas. \
    * Mathematical operations such as logarithms and trigonometric functions. \
    * Programmer's features (bitwise operations, non-decimal numbers). \
    * Financial functions such as future value and internal rate of return. \
    * Number theoretical features such as prime factorization and \
      arithmetic modulo M for any M. \
    * Algebraic manipulation features, including symbolic calculus. \
    * Moving data to and from regular editing buffers. \
    * \"Embedded mode\" for manipulating Calc formulas and data directly \
      inside any editing buffer. \
    * Graphics using GNUPLOT, a versatile (and free) plotting program. \
    * Easy programming using keyboard macros, algebraic formulas, \
      algebraic rewrite rules, or extended Emacs Lisp." \
 command="emacs -f calc"
