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Preamble

Use of public documents on IRT's ReadTech.org site are provided pursuant to the following conditions as detailed on each of the individual tabbed sections.

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LICENSE

By using the materials contained within these documents, including the IRT/ReadTech.org document(s) linking to this statement, you agree that you have read, understood, and will comply with the following terms and conditions:

Permission to copy and/or distribute the contents of this document, or the IRT/ReadTech.org document linking to this statement, in any medium and for any purpose, is prohibited, except where expressly permitted in writing, and under the specific conditions therein defined.

Regardless of those specific conditions, any and all copies or derived works must include the following on ALL copies of the document, or portions thereof:

  • A link or URL to the original IRT/ReadTech.org document.
  • The pre-existing copyright notice of the original author, or if it doesn't exist, a notice (hypertext is preferred, but a textual representation is permitted) of the form: "Copyright © [$date-of-document] Inclusive Reading Technologies. http://www.ReadTech.org/LGL/"
  • If it exists, the current status of the IRT/ReadTech.org or Myndex document.

When space permits, inclusion of the full text of this notice should be provided. Authorship attribution to be provided in any software, documents, or other items or products created pursuant to the implementation of the contents of this document, or any portion thereof.

Creating or distributing modifications or derivatives of IRT/ReadTech.org documents is prohibited, with exceptions for materials where specific use is expressly permitted in writing. Such materials require copyright notice attached as specified herein.

In addition, code, markup (HTML, CSS, etc.), and computer programming language code, including that marked as code examples, are licensed separately under the IRT/ReadTech.org Software License.

The specified notice is: "Copyright © 2023 IRT™/ReadTech.org. All Rights Reserved. This software or document includes material copied from or derived from [title and URI of the IRT/ReadTech.org document]."

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DISCLAIMERS

THIS DOCUMENT IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, OR TITLE; NOR THAT THE CONTENTS OF THE DOCUMENT ARE SUITABLE FOR ANY PURPOSE; NOR THAT THE IMPLEMENTATION OF SUCH CONTENTS WILL NOT INFRINGE ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.

COPYRIGHT HOLDERS SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OR MISUSE OF THE DOCUMENT OR MATERIALS OR THE PERFORMANCE OR IMPLEMENTATION OF THE CONTENTS THEREOF.

Inclusive Reading Technologies • Legal

PATENTS

Licensing of patents is not covered by this document, and patents are licensed per specific individual agreements in writing.

Inclusive Reading Technologies • Legal

TRADEMARKS

The name(s) and trademarks of copyright holders may NOT be used in advertising or publicity pertaining to this document or its contents without specific, written prior permission.

The trademarks, logos, service marks ("Trademarks") and intellectual property identifiers displayed or described on this site and the related sites are trademarks of Inclusive Reading Technologies (IRT), Myndex (MTI), General Titles & Visual Effects (GTFX), or Andrew Somers (AMS). All Rights Reserved. Unauthorized usage prohibited. Permission to use subject to specific related licensing agreements.

Myndex™ and the Myndex eye logo are trademarks of Myndex.
General Titles™
APCA™, Accessible Perceptual Contrast Algorithm™, aka the Advanced Perceptual Contrast Algorithm™
IRT™, Inclusive Reading Technologies™
ARC™, APCA Readability Criterion™
PUCC™, Perceptually Uniform Contrast Curve
Apcia™ the Happy Read-Cow

GENERIC TERMS:

Terms which are claimed as generic are not governed by any IRT license and are used as common descriptors by Myndex/IRT/General Titles et alia.

HVS (generic), Human Vision System
VWFA (generic), Visual Word Form Area
CVD (generic), Color Vision Deficiency
Bronze (generic), a target conformance level
Silver (generic), a target conformance level
Gold (generic), a target conformance level
VRC (generic), Visual Readability Contrast
VC (generic), Visual Contrast
VA (generic), Visual Angle, in some contexts, Visual Acuity
CS (generic), Contrast Sensitivity
SF (generic), Spatial Frequency
HSF (generic), High Spatial Frequency
LSF (generic), Low Spatial Frequency
STC (generic), Supra-Threshold Contrast

The absence of a product or service name or logo from this list does not constitute a waiver of said trademark, use of a generic term, or other intellectual rights regarding such name, mark, indicator, characteristic, or logo.


OTHER PARTIES:

Non-stated, non-enumerated generic terms associated with W3C as used or referred to herein. Terms which claimed as generic are not governed by any W3C license and are used as common descriptors by the W3C.

AGWG (generic), Accessibility Guidelines Working Group
WCAG (generic), Web Content Accessibility Guidelines (WCAG 1 & 2), aka the W3C Accessibility Guidelines (WCAG 3)
Silver (generic), the Silver a.k.a. WCAG3 task force or community group
LVTF (generic), Low Vision Task Force
VCS (generic), Visual Contrast Subgroup of Silver

W3C ENUMERATED TRADEMARKS

Stated W3C Enumerated Trademarks and Stated Generic Terms as used on this site and related sites, per the relevant W3C license. Any use in any documents on this site and the related sites, of generic terms or trademarks of the World Wide Web Consortium shall not indicate nor imply endorsement nor official recommendation by the W3C or any working group therein.

The following is a partial list of W3C terms claimed as a trademark or generic term by MIT, ERCIM, Keio, and/or Beihang on behalf of the W3C, and governed by the W3C Trademark and Servicemark License. Terms which claimed as generic are not governed by any W3C license and are used as common descriptors by the W3C.

W3C®, World Wide Web Consortium (registered in numerous countries)
WAI™, Web Accessibility Initiative
CSS (generic), Cascading Style Sheets Specification
HTML (generic), HyperText Markup Language
MathML (generic), Mathematical Markup Language
SVG (generic), Scalable Vector Graphics
WebFonts (generic)
DOM (generic), Document Object Model