Usage: annotate imagein.jpg imageout.jpg

Standard input should consist of
lines in the following formats:
color r g b (0-255 each) [a (0-127, 0 is opaque)]
font fontname
size pointsize
align (left|right|center)
move x y
text actual-output-text

If the file 'paris.ttf' exists in /usr/share/fonts/truetype or in a
location specified in the GDFONTPATH environment variable, 'font paris' is
sufficient. You may also specify the full, rooted path of a font file.