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+This directory contains a collection of lookup tables compiled from various
+sources.  The origin of most of these was Klaus Banse of the MIDAS project.
+The ultimate source of many of the tables is unknown.
+
+To have the colortables in this directory loaded automatically by Ximtool
+install them in the directory
+
+	/usr/local/lib/imtoolcmap/
+
+Or, to load colortables from a custom directory set the cmapDir1 or cmapDir2
+ximtool resource to the pathname of the directory containing the tables.
+
+The format of a user lookup table is very simple: each row defines one
+colortable entry, and consists of three columns defining the red, green,
+and blue values scaled to the range 0.0 (off) to 1.0 (full intensity).
+
+	R G B
+	R G B
+	(etc.)
+
+Blank lines and comment lines (# ...) are ignored.
+
+Usually 256 rows are provided, but the number may actually be anything
+in the range 1 to 256.  Ximtool will interpolate the table as necessary
+to compute the colortable values used in Ximtool.  Ximtool uses only
+201 colors to render pixel data, so it is usually necessary to interpolate
+the table when it is loaded.
+
+Tables are loaded into Ximtool by setting one of the user colormap directory
+resources.  When Ximtool starts up it will read all the files in the
+colormap directory, disregarding any files that are unreadable or that do
+not appear to be colortables.  The name of the colortable as it will appear
+in the Ximtool control panel is the root name of the file, e.g., if the
+file is "rainbow.lut" the colortable name will be "rainbow".  Lower case
+names are suggested to avoid name collisions with the builtin colortables.
+If the same colortable file appears in multiple user colortable directories,
+the first one will be used.