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+.TH CG-LINEAR 1 CG-TOOLS
+.SH NAME
+cg-linear - Create a span where adjustments are over unencodec RGB
+.SH SYNOPSIS
+.B cg-linear
+.RB [ \-M
+.IR method ]
+.RB [ \-S
+.IR site ]
+.RB [ \-c
+.IR crtc "]... ["\fB\-R\fP
+.IR rule-base ]
+.RB ( \-x
+|
+.B \-p
+.IB start-priority : stop-priority
+.RB [ \-d ]
+.RB [ \+rgb ])
+.SH DESCRIPTION
+.B cg-linear
+adds two filters to the CLUT, one filter that converts
+all stops to unencoded RGB, and a second filter that
+converts all stops to encodec RGB.
+.P
+Note that if this is applied multiple times, values
+can be doubly encoded and doubly decode.
+.SH OPTIONS
+.TP
+.BR \+r
+Ignore the red channel.
+.TP
+.BR \+g
+Ignore the green channel.
+.TP
+.BR \+b
+Ignore the blue channel.
+.TP
+.BR \-c " "\fIcrtc\fP
+Apply the filter to the CRTC with the monitor whose EDID is
+.IR crtc .
+By default, the filter is applied to all monitors.
+
+If
+.I crtc
+is
+.RB ' ? ',
+all available CRTC's are listed.
+.TP
+.B \-d
+Keep the process alive and remove the filter on death.
+.TP
+.BR \-M " "\fImethod\fP
+Adjustment method name or number. Recognised names include:
+.TS
+tab(:);
+l l.
+\fBdummy\fP:Dummy method
+\fBrandr\fP:X RAndR
+\fBvidmode\fP:X VidMode
+\fBdrm\fP:Linux DRM
+\fBgdi\fP:Windows GDI
+\fBquartz\fP:Quartz Core Graphics
+.TE
+
+The adjustment methods are supported via
+.BR libgamma (7).
+Only methods that were enabled when
+.B libgamma
+was compiled will be supported.
+
+If
+.I method
+is
+.RB ' ? ',
+all available adjustment methods are printed.
+.TP
+.BR \-p " "\fIstart-priority\fP\fB:\fP\fIstop-priority\fP
+Set the priority of the linearisation filter to
+.IR start-priority ,
+and the priority of the delinearisation filter to
+.IR stop-priority .
+Filters with higher priority are applied before filters with
+lower priority. This means that normally you want the
+.I start-priority
+to be higher than
+.IR stop-priority .
+The value must be a signed 64-bit integer (between
+\-9223372036854775807 and 9223372036854775807).
+.TP
+.BR \-R " "\fIrule-base\fP
+Set the rule base of of the filters to
+.IR rule-base .
+.RB ' :start '
+and
+.RB ' :stop '
+are appended to the
+linearisation filter's rule and delinearisation filter's rule,
+respectively. The rule is the last part of the filter's
+identifier (class). The default rule base is
+.BR standard .
+
+If
+.I rule
+is
+.RB ' ? '
+the utility's default rule vase is printed. If
+.I rule
+is
+.RB ' ?? '
+the utility's default classes is printed. The first printed
+class is for the linearisation filter, and the second printed
+class is for the delinearisation filter.
+.TP
+.BR \-S " "\fIsite\fP
+Select the site to which to connect. For example
+.RB ' :0 ',
+for local display 0 when using
+.BR X .
+.TP
+.B \-x
+Remove the currently applied filter.
+.SH SEE ALSO
+.BR cg-tools (7)