# IMTILE

input,f,a,,,,List of input image tiles
output,f,a,,,,Output tiled image
nctile,i,a,,,,Number of input tiles in the output column direction
nltile,i,a,,,,Number of input tiles in the output line direction
trim_section,s,h,"[*,*]",,,Input tile section 
missing_input,s,h,"",,,List of missing image tiles
start_tile,s,h,"ll",,,Position in output image of first input tile
row_order,b,h,yes,,,Insert input tiles in row order ?
raster_order,b,h,no,,,Insert input tiles in raster scan order ?
median_section,s,h,"",,,Input tile section used to compute the median
subtract,b,h,no,,,Subtract the median pixel value from each input tile ?
ncols,i,h,INDEF,,,The number of columns in the output image
nlines,i,h,INDEF,,,The number of lines in the output image
ncoverlap,i,h,-1,,,Number of columns of overlap between adjacent tiles
nloverlap,i,h,-1,,,Number of lines of overlap between adjacent tiles
opixtype,s,h,"r",,,Output image pixel type
ovalue,r,h,0.0,,,Value of undefined output image pixels
verbose,b,h,yes,,,Print messages about progress of the task ?
mode,s,h,'ql'