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      <div class="breadcrumb"><a href="/">Home</a> » <a href="/licenses">Licenses</a></div>

      <h1 property="dc:title">TekHVC License</h1>
      <div style="display:none;"><code property="spdx:deprecated">false</code></div>
      <h2>Full name</h2>
          <p style="margin-left: 20px;"><code property="spdx:name">TekHVC License</code></p>

      <h2>Short identifier</h2>
          <p style="margin-left: 20px;"><code property="spdx:licenseId">TekHVC</code></p>

      <h2>Other web pages for this license</h2>
          <div style="margin-left: 20px;">
            <ul>
             <li>
               <a href="https://gitlab.freedesktop.org/xorg/lib/libx11/-/blob/master/COPYING?ref_type=heads#L138-171" rel="rdfs:seeAlso" isValid=true isLive=true isWayBackLink=false match=false timestamp=2026-02-20T21:02:29Z>https://gitlab.freedesktop.org/xorg/lib/libx11/-/blob/master/COPYING?ref_type&#61;heads#L138-171</a>
               <!--Tentative way of displaying information <p>isValid: true, isLive: true, isWayBackLink: false, match: false, timestamp: 2026-02-20T21:02:29Z</p> -->
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      <div property="spdx:isOsiApproved" style="display: none;">false</div>

      <h2 id="notes">Notes</h2>
          <p style="margin-left: 20px;">None</p>

      <h2 id="licenseText">Text</h2>
      
      <blockquote cite="https://spdx.github.io/spdx-spec/v2.3/license-matching-guidelines-and-templates/">
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		      Text in italicized blue is omittable (see <a href="https://spdx.github.io/spdx-spec/v2.3/license-matching-guidelines-and-templates/#b35-guideline-omittable-text">Matching Guidelines B.3.5</a>).
		      License or exception text will match to the text for the specified identifier if it either includes or excludes this omittable text.
			  <br/>
			  <br/>
			  Text in red is replaceable (see <a href="https://spdx.github.io/spdx-spec/v2.3/license-matching-guidelines-and-templates/#b34-guideline-replaceable-text">Matching Guidelines B.3.4</a>).
			  License or exception text will match to the text for the specified identifier if it includes a permitted variant of this replaceable text.
			  The permitted variants can be found in the corresponding regular expression as shown in title text visible by hovering over the red text.
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      <div property="spdx:licenseText" class="license-text">
      
         <var class="replaceable-license-text"><span title="can be replaced with the pattern .{0,5000}"> 
            Code and supporting documentation (c) Copyright
            1990 1991 Tektronix, Inc. All Rights Reserved
         </span></var>
         <p>
            This file is a component of an X Window System-specific
            implementation of Xcms based on the TekColor Color Management
            System. TekColor is a trademark of Tektronix, Inc. The term
            &quot;TekHVC&quot; designates a particular color space that is the
            subject of U.S. Patent No. 4,985,853 (equivalent foreign
            patents pending). Permission is hereby granted to use, copy,
            modify, sell, and otherwise distribute this software and its
            documentation for any purpose and without fee, provided that:
         </p>

<ul style="list-style:none">
            
<li>
               <var class="replaceable-license-text"><span title="can be replaced with the pattern .{0,20}"> 1.</span></var>
               This copyright, permission, and disclaimer notice
               is reproduced in all copies of this software and any
               modification thereof and in supporting documentation;
            </li>
            
<li>
               <var class="replaceable-license-text"><span title="can be replaced with the pattern .{0,20}"> 2.</span></var>
               Any color-handling application which displays TekHVC
               color cooordinates identifies these as TekHVC color
               coordinates in any interface that displays these
               coordinates and in any associated documentation;
            </li>
            
<li>
               <var class="replaceable-license-text"><span title="can be replaced with the pattern .{0,20}"> 3.</span></var>
               The term &quot;TekHVC&quot; is always used, and is only used, in
               association with the mathematical derivations of the TekHVC
               Color Space, including those provided in this file and any
               equivalent pathways and mathematical derivations, regardless
               of digital (e.g., floating point or integer) representation.
            </li>
         
</ul>
         <p>
            Tektronix makes no representation about the
            suitability of this software for any purpose.
            It is provided &quot;as is&quot; and with all faults.
         </p>

         <p>
            TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE,
            INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
            A PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY
            SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
            RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION
            OF CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF
            OR IN CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.
         </p>

      
      </div>

      <h2  id="licenseHeader">Standard License Header</h2>
      <div property="spdx:standardLicenseHeader" class="license-text">
        <p style="font-style: italic">There is no standard license header for the license</p>
        
      </div>
      <div property="spdx:standardLicenseTemplate" style="display: none;">
      &lt;&lt;var;name&#61;&quot;copyright&quot;;original&#61;&quot;Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc. All Rights Reserved&quot;;match&#61;&quot;.{0,5000}&quot;&gt;&gt;&#10;This file is a component of an X Window System-specific implementation of Xcms based on the TekColor Color Management System. TekColor is a trademark of Tektronix, Inc. The term &quot;TekHVC&quot; designates a particular color space that is the subject of U.S. Patent No. 4,985,853 (equivalent foreign patents pending). Permission is hereby granted to use, copy, modify, sell, and otherwise distribute this software and its documentation for any purpose and without fee, provided that:&#10;&#10;   &lt;&lt;var;name&#61;&quot;bullet&quot;;original&#61;&quot;1.&quot;;match&#61;&quot;.{0,20}&quot;&gt;&gt; This copyright, permission, and disclaimer notice is reproduced in all copies of this software and any modification thereof and in supporting documentation;&#10;   &lt;&lt;var;name&#61;&quot;bullet&quot;;original&#61;&quot;2.&quot;;match&#61;&quot;.{0,20}&quot;&gt;&gt; Any color-handling application which displays TekHVC color cooordinates identifies these as TekHVC color coordinates in any interface that displays these coordinates and in any associated documentation;&#10;   &lt;&lt;var;name&#61;&quot;bullet&quot;;original&#61;&quot;3.&quot;;match&#61;&quot;.{0,20}&quot;&gt;&gt; The term &quot;TekHVC&quot; is always used, and is only used, in association with the mathematical derivations of the TekHVC Color Space, including those provided in this file and any equivalent pathways and mathematical derivations, regardless of digital (e.g., floating point or integer) representation.&#10;Tektronix makes no representation about the suitability of this software for any purpose. It is provided &quot;as is&quot; and with all faults.&#10;&#10;TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.&#10;&#10;
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