vioplotCM: violin plots with control
In Cmell/CMUtils: Utility Functions I Often Use

Plot violin plots the cool way.

vioplotCM(x, ..., range = 1.5, h = NULL, ylim = NULL, names = NULL,
  horizontal = FALSE, col = "cornflowerblue", border = "black",
  lty = 1, lwd = 1, rectCol = "black", colMed = "white",
  pchMed = 19, at, add = FALSE, wex = 1, drawRect = TRUE,
  na.fun = na.omit, drawMean = T, mnLty = 2, mnLwd = 1.5,
  mnCol = "black", mnLength = NULL, main = "", mainLine = 1,
  maincex = 1.5, nameCex = 1, xlab = "", xlabLine = 2,
  xlabcex = 1.1, ylab = NULL, ylabLine = 2.5, ylabcex = 1.3,
  labelMeans = F, mnsDigits = 2)

`x`	A vector of values to vioplot.
`...`	More vectors of values to vioplot.
`range`	A factor to calculate the upper/lower adjacent values.
`h`	The height for the density estimator, if omit as explained in sm.density, h will be set to an optimum.
`ylim`	y limits (vector of length 2).
`names`	An optional character vector of labels for each set of values to be vioplotted. If omitted, they are generated from the variable names.
`horizontal`	Logical, make it horizontal or vertical.
`col`	A recycled vector of colors for the vioplots themselves.
`border, rectCol`	Colors for the things.
`lty, lwd`	Graphical paramters when drawing the lines.
`colMed, pchMed`	Graphical paramters for the symbol representing the median.
`at`	The position of each violin. Defaults to 1:n, where n is the number of vectors being vioplotted.
`add`	If FALSE (default) a new plot is created.
`wex`	Relative expansion of the violin.
`drawRect`	Put on a rectangle on it?
`na.fun`	Defaults to `na.omit()`. This is the way that `NA`s are dealt with.
`drawMean`	Should a line be drawn for each mean?
`mnLty, mnLwd, mnCol`	Graphical paramters for drawing the mean line.
`mnLength`	The length of the mean line in plot units. Defaults to something sensible.
`main`	Plot main title.
`mainLine, maincex`	Graphical parameters for the main title.
`nameCex`	Relative size of the category labels.
`xlab`	A title for the x-axis placed underneath the category labels.
`xlabLine, xlabCex`	Graphical parameters for the x-axis label.
`ylab`	An optional label for the y-axis.
`ylabLine, ylabCex`	Graphical paramters for the y-axis label.
`labelMeans`	Logical. If true, the means for each group will be calculated and added in parentheses to the `names` items.
`mnsDigits`	The number of digits to round the means values to.