The period after ``yuv'' in the first paragraph doesn't seem right.

Reference: /n/sources/patch/applied/jpg-man-grammar
Date: Sun Dec 17 12:27:20 CET 2006
Signed-off-by: m.ne@gmx.net

--- /sys/man/1/jpg	Sun Dec 17 12:26:36 2006
+++ /sys/man/1/jpg	Sun Dec 17 12:26:33 2006
@@ -99,7 +99,7 @@
 .IR ppm ,
 .IR bmp ,
 and
-.IR yuv .
+.IR yuv
 read files in the corresponding formats and, by default, display
 them in the current window; options cause them instead to convert the images
 to Plan 9 image format and write them to standard output.