draw.rgrline draws a population regression line and places a normal distribution over individual points on the line to show the assumed distribution of points.  

ARGUMENTS:

b0 = intercept;  b1 = slope
xval = vector of points at which normal distributions should be plotted

** Finish specifying the arguments **

ARGUMENTS:
'center' is the center of the ellipse.
'width' and 'ht' are the width and height of ellipse.
'phi' determines a counterclockwise rotation of the ellipse in degrees.
'make.plot=T' to plot the ellipse on the current graphic device; 'make.plot=F' to omit the plot.
'output.points =T' to return the coordinates of the ellipse as output.
'...' to pass parameters to the polygon function, e.g., color.

em548 copies the 548 email list to the clipboard.

'encode.nums' creates a simple numeric code for number strings.
See also 'decode.nums'

The 'entropy' function computes the entropy of a finite probability vector or the entropy of each row of a matrix.  The probability vector or matrix rows must sum to 1.0.

ARGUMENTS:

x = a vector or matrix.

base = the base of the logarithm in the calculation of -p*log(p).  It defaults to base 10.

If 'entropy.only = TRUE', then the function outputs the entropy values alone.  If 'entropy.only = FALSE' (default), the function outputs the inputted probabilities along with the entropy for each inputted probability distribution.

'eq.strings' tests whether two strings are identical.  By default,
blank spaces are removed from the strings and the letters are all
set to lower case prior to testing for identity.  These defaults
can be overridden.  The 'eq.strings' function removes the class
attribute prior to testing for equality of the strings.
'eq.strings' returns TRUE or FALSE depending on the whether
the strings are identical.
's1', 's2' = strings to be compared.
'lower.case = TRUE' (default): Transform both strings to lower case
prior to testing for equality.
'strip.characters = " "' (default) - this is the vector of characters
to strip from the strings prior to testing for equality.
'show.unequal = FALSE' (default) - If 'show.unequal = TRUE', then
the two strings are printed to the screen in the case where they
are unequal.