columns(arg) (default=“auto”)

Columns for legend: “auto” (automatically choose number of columns), int (put legend in specified number of columns).

display/–display

Display/do not display the legend.

inbox/–inbox

Put legend in box/remove box around legend.

position(arg)

Position for legend: “left” or “l” (place legend on left side of graph), “right” or “r” (place legend on right side of graph), “botleft” or “bl” (place left-justified legend below graph), “botcenter” or “bc” (place centered legend below graph), “botright” or “br” (place right-justified legend below graph), “(h, v)” (the first number h specifies the number of virtual inches to offset to the right from the origin. The second number v specifies the virtual inch offset below the origin. The origin is the upper left hand corner of the graph).

font([face], [pt], [+/- b], [+/- i], [+/- u], [+/- s])

Set characteristics of legend font. The font name (face), size (pt), and characteristics are all optional. face should be a valid font name, enclosed in double quotes. pt should be the font size in points. The remaining options specify whether to turn on/off boldface (b), italic (i), underline (u), and strikeout (s) styles.

textcolor(arg)

Sets the color of the legend text. arg may be one of the predefined color keywords, or it may be specified using individual red-green-blue (RGB) components using the “@RGB” or “@HEX” functions. The arguments to the @RGB function are a set of three integers from 0 to 255, representing the RGB values of the color. The arguments to the “@HEX” function are a set of six characters representing the RGB values of the color in hexadecimal. Each two character set represents a red, green or blue component in the range '00' to 'FF'. For a description of the available color keywords see “Color definitions”.

fillcolor(arg)

Sets the background fill color of the legend box. arg may be one of the predefined color keywords, or it may be specified using individual red-green-blue (RGB) components using the “@RGB” or “@HEX” functions. The arguments to the @RGB function are a set of three integers from 0 to 255, representing the RGB values of the color. The arguments to the “@HEX” function are a set of six characters representing the RGB values of the color in hexadecimal. Each two character set represents a red, green or blue component in the range '00' to 'FF'. For a description of the available color keywords see “Color definitions”.

framecolor(arg)

Sets the color of the legend box frame. arg may be one of the predefined color keywords, or it may be specified using individual red-green-blue (RGB) components using the “@RGB” or “@HEX” functions. The arguments to the @RGB function are a set of three integers from 0 to 255, representing the RGB values of the color. The arguments to the “@HEX” function are a set of six characters representing the RGB values of the color in hexadecimal. Each two character set represents a red, green or blue component in the range '00' to 'FF'. For a description of the available color keywords see “Color definitions”.