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R: Graphical device parameters

Each device has a its own set of graphical parameters which can be set or queried with par().
Some (all?) graphical parameters are:
adj Justification of text strings in text, mtext and title A value between 0 and 1.
ann TRUE, FALSE0
ask Ask a user of an interactive session before a new figure is drawn TRUE, FALSE
bg Background color (compare fg and col)
bty Type of box
cex Magnification of text and symbols, relative to default numerical value
cex.axis
cex.lab
cex.main
cex.sub
cin Character size in inches, read only (compare cra)
col Default color (compare bg)
col.axis
col.lab
col.main
cra Character size in pixels (ra = raster). Compare with cin
crt Rotation of characters in degrees Numerical value. Should be multiples of 90.
csi Height of character in inches. Same as par(cin)[2]. Read only.
cxy
din Device dimensions in inches. Read only. See also dev.size()
err (apparently not implemented)
family Font family "", serif, sans, mono, Hershey font families …
fg Forground color. Compare with bg
fig
fin
font Compare with family 1 = normal, 2 = bold, 3 = italic, 4` = bold italic
font.axis
font.lab
font.main
font.sub
lab Annotation of axes c(x, y, len)
las Style of axis labels 0: parallel, 1: horizontal, 2: perpendicular, 3: vertical
lend Line end style 0 = round / 1 = butt / 2 = square
lheight Line hight multiplier
ljoin Line join style
lmitre Line mitre limit
lty Line type
lwd Line width
mai Margin in inches
mar c(bottom, left, top, right)
mex Character size expansion
mfcol, mfrow Draw plots in a «table» of mfcol times mfrow columns
mfg
mgp Margin line for axis title in mex units
mkh
new If FALSE, plot.new() will not clean the frame
oma
omd
omi
page
pch Specify point type for plotting
pin
plt
ps
pty Type of plot region s: square, m: maximal
smo Unimplemented
srt Degrees of String rotation
tck Length of tick marks
tcl
usr Extrems of user coordinates
xaxp
xaxs
xaxt
xlog If TRUE, a logarthmic scale is used
xpd
yaxp
yaxs
yaxt
ylbias
ylog

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