X-Git-Url: https://cads.iiap.res.in/gitview/?p=fits2jpeg.git;a=blobdiff_plain;f=src%2Fmessages.c;h=75f890c1f43ec93750bc0c61af0170f9092f4372;hp=edcdc68e062802618e32ebb6efa86e22180b2762;hb=c217f20a424f31d11946263980a8f14ca7a79a0e;hpb=60d065b23a2bdd48da5b8ef3ce591b7b0313c979

diff --git a/src/messages.c b/src/messages.c
index edcdc68..75f890c 100644
--- a/src/messages.c
+++ b/src/messages.c
@@ -62,6 +62,9 @@ void usage()
     printf ("       Resize/Scale output image by <zoomfactor>. Eg:      \n");
     printf ("         0.5            Shrink output to half of input     \n");
     printf ("         2.0            Magnify output to double the size  \n");
+    printf ("                        Allowed range: 0.01 to 4.0         \n");
+    printf ("       NOTE: Zooming will be carried out after all other   \n");
+    printf ("             operations, before writing out jpeg image     \n");
     printf ("  Output will be written to <fits_file_root>.jpg. Wild card\n");
     printf ("  entries allowed in <fits_file>; For eg: *.fits, m31*.fits\n");
     printf ("  ngc???.fits etc.                                         \n");