XTo properly translate and scale a figure psfig must know its `natural'
Xposition on the page; this information is present
Xin what is called the bounding box of a PostScript program. The
Xbounding box is a outer limit to the marks created by a program,
Xand is specified as four coordinates of a rectangle: the lower-left x coordinate
X(bbllx), the lower-left y coordinate (bblly), the upper-right
Xx coordinate (bburx), and the upper-right y coordinate (bbury).
XAdobe has defined a convention whereby the bounding box of a program
Xis contained in a `bounding box comment'.
X2XThis comment, which must be present in any file to be used as a psfig figure,
Xis a line of the form
X
X%%BoundingBox: bbllx bblly bburx bbury
X
XAll values are in PostScript points, relative to the default
Xtransformation matrix. The only mandatory PostScript convention is
Xthat the first line of the file should begin with the characters
X`%!' (a `%' begins a comment in PostScript.) A good place for the
Xbounding box comment is as the second line of the file.
X
XThere is a bbfig utility on systems to aid in calculating
Xthe bounding box, refer to the bbfig(l) manual page for further information.
X