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Comparing ray/doc/man/man1/rvu.1 (file contents):
Revision 1.6 by greg, Fri Oct 18 17:04:13 2013 UTC vs.
Revision 1.11 by greg, Sun Aug 13 20:11:04 2017 UTC

# Line 42 | Line 42 | A command argument beginning with an at sign ('@') is
42   replaced by the contents of the given file.
43   The options are the same as for rpict(1), with a few notable exceptions.
44   The
45 < .I "\-r, \-z, \-S, \-P, \-PP"
45 > .I "\-pd, \-r, \-z, \-S, \-P, \-PP"
46   and
47   .I \-t
48   options are not supported, and
# Line 207 | Line 207 | was started by
207   .I rad,
208   then the
209   .I rfile
210 < parameter will initially default to the rad input file used.
210 > parameter will initially default to the
211 > .I rad
212 > input file used.
213   .TP
214   .BI move " [ mag [ x y z ] ]"
215   Move camera
# Line 246 | Line 248 | may be changed if the new direction coincides.
248   Similar to the "move" command, but pivots the view about a selected point.
249   The
250   .I angle
251 < is measured in degrees around the view up vector using the right hand rule.
251 > is measured in degrees around the view up vector using the right hand rule,
252 > so a positive value pivots the viewer to the right of the selected point.
253   The optional
254   .I elev
255   is the elevation in degrees from the pivot point; positive raises the view point
# Line 265 | Line 268 | color table selection.
268   .BI rotate " angle [ elev [ mag ] ]"
269   Rotate the camera horizontally by
270   .I angle
271 < degrees.
271 > degrees using the right-hand rule.
272 > A positive value rotates the view towards the left, and a negative value
273 > looks to the right.
274   If an elevation is specified, the camera looks upward
275   .I elev
276   degrees.
# Line 356 | Line 361 | Stop the program.
361   The screen will be redrawn when the program resumes.
362   .SH ENVIRONMENT
363   RAYPATH         the directories to check for auxiliary files.
364 + .br
365   DISPLAY_GAMMA           the value to use for monitor gamma correction.
366   .SH AUTHOR
367   Greg Ward
368   .SH "SEE ALSO"
369 < getinfo(1), lookamb(1), oconv(1), pfilt(1), rad(1), rpict(1), rtrace(1)
369 > getinfo(1), lookamb(1), mkpmap(1),
370 > oconv(1), pfilt(1), rad(1), rpict(1), rtrace(1)

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