XCMSDB(1)						      General Commands Manual							 XCMSDB(1)

NAME

       xcmsdb - Device Color Characterization utility for X Color Management System

SYNOPSIS

       xcmsdb [ -query ] [ -remove ] [ -format 32|16|8 ] [ filename ]

DESCRIPTION

       xcmsdb is used to load, query, or remove Device Color Characterization data stored in properties on the root window of the screen as speci-
       fied in section 7, Device Color Characterization, of the ICCCM.	Device Color Characterization data (also called the Device Profile) is	an
       integral part of Xlib's X Color Management System (Xcms), necessary for proper conversion of color specification between device-independent
       and device-dependent forms.  Xcms uses 3x3 matrices stored in  the  XDCCC_LINEAR_RGB_MATRICES  property	to  convert  color  specifications
       between	CIEXYZ	and  RGB  Intensity  (XcmsRGBi,  also  referred to as linear RGB).  Xcms then uses display gamma information stored in the
       XDCCC_LINEAR_RGB_CORRECTION property to convert color specifications between RGBi and RGB device (XcmsRGB, also referred to as device RGB).

       Note that Xcms allows clients to register function sets in addition to its built-in function set for CRT color monitors.  Additional  func-
       tion sets may store their device profile information in other properties in function set specific format.  This utility is unaware of these
       non-standard properties.

       The ASCII readable contents of filename (or the standard input if no input file is given) are  appropriately  transformed  for  storage	in
       properties, provided the -query or -remove options are not specified.

OPTIONS

       xcmsdb program accepts the following options:

       -query  This  option attempts to read the XDCCC properties off the screen's root window.  If successful, it transforms the data into a more
	       readable format, then sends the data to standard out.

       -remove This option attempts to remove the XDCCC properties on the screen's root window.

       -format 32|16|8
	       Specifies the property format (32, 16, or 8 bits per entry) for the XDCCC_LINEAR_RGB_CORRECTION	property.   Precision  of  encoded
	       floating point values increases with the increase in bits per entry.  The default is 32 bits per entry.

SEE ALSO

       xprop(1), Xlib documentation

ENVIRONMENT

       DISPLAY to figure out which display and screen to use.

AUTHOR

       Chuck Adams, Tektronix Inc.  Al Tabayoyon, SynChromatics Inc. (added multi-visual support)

X Version 11							   xcmsdb 1.0.4 							 XCMSDB(1)