I just read your last post why is STATUS set to OFF? STATUS should be
either DEFAULT (displayed always) or ON (displayed when layer is set
through CGI URL i.e. ..&layers=testign)
-e
LAYER
NAME testign
TYPE RASTER
STATUS OFF
OFFSITE 252 252 252
CLASS
NAME 'TEST IGN'
KEYIMAGE graphics/drgs_keyimage.png
END
DATA "ign25/d516.tif"
END