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Comparing ray/doc/man/man1/xform.1 (file contents):
Revision 1.3 by greg, Thu Jan 1 19:31:45 2004 UTC vs.
Revision 1.4 by greg, Tue Sep 4 17:36:41 2007 UTC

# Line 167 | Line 167 | each preceded by an array count.
167   To rotate ``book'' 30 degrees about the x axis then
168   move 20 in y, prepending the name book1:
169   .IP "" .2i
170 < xform -n book1 -rx 30 -t 0 20 0 book > book1
170 > xform \-n book1 \-rx 30 \-t 0 20 0 book > book1
171   .PP
172   To expand all commands and see what information is actually used by RADIANCE:
173   .IP "" .2i
# Line 176 | Line 176 | xform scene | more
176   To create a two-dimensional array of 20 lights, after an initial rotation
177   and followed by a global translation (no command expansion):
178   .IP "" .2i
179 < xform -c -rz 90 -a 5 -t 2 0 0 -a 4 -t 0 1.5 0 -i 1 -t 0 0 10 light
179 > xform \-c \-rz 90 \-a 5 \-t 2 0 0 \-a 4 \-t 0 1.5 0 \-i 1 \-t 0 0 10 light
180   .SH ENVIRONMENT
181   RAYPATH         path to search for scene files
182   .SH AUTHOR

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