# Are Electronic Signatures Legally Binding? ESIGN, UETA, eIDAS and What Still Needs Ink

Yes, for most contracts: US, EU and UK law say a signature cannot be refused just for being electronic. What counts, what is excluded and what still needs ink.

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- **Canonical URL:** https://dothecalculation.com/blog/business/are-electronic-signatures-legally-binding
- **Category:** Business
- **Author:** Do The Calculation Team
- **Published:** 2026-09-30
- **Reading time:** 20 min read
- **Publisher:** Do The Calculation (https://dothecalculation.com)
- **Methodology:** https://dothecalculation.com/methodology

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## Are electronic signatures legally binding? The short answer

Yes, for most contracts and everyday documents. In the United States the ESIGN Act and the state UETA laws, in the European Union the eIDAS Regulation, and in the United Kingdom the courts and the Law Commission all say a signature cannot be refused legal effect just because it is electronic. A typed name, a drawn signature or a signature image can count, if you meant it as your signature. The exceptions are specific: wills almost everywhere, many deeds and witnessed documents, some family-law, court and property papers, and certain consumer notices.

Being valid is not the same as being easy to prove. The law accepts the form; whether a particular signature holds up in a dispute depends on evidence that the named person signed, meant to, and that the document was not changed afterwards. This guide sets out the rules we read in the statutes themselves on 30 September 2026, the documents that still need more, and what different kinds of electronic signature actually prove.

Tool: [Sign a PDF in your browser](https://dothecalculation.com/tools/sign-pdf) — Place your signature, initials and the date on a PDF and fill its form fields, without uploading it. An optional digital seal shows whether the file changes afterwards.

> **Not legal advice** — This is general information from the statutes and official guidance, not advice on a particular document. Where a lot is at stake, or the document is a will, a deed, a property transfer or anything for a court, check with a lawyer or notary in the place where it will be used.

## The three things that make an electronic signature stick

The statutes differ in wording, but they, and the courts applying them, keep coming back to the same three questions.

- Intent to sign. Every definition below turns on it. ESIGN defines an electronic signature as something “executed or adopted by a person with the intent to sign the record”; eIDAS as data “used by the signatory to sign”; the UK Electronic Communications Act as something that “purports to be used by the individual creating it to sign”. A name at the end of an email can be a signature; the same name in a letterhead usually is not.
- Agreement to deal electronically. UETA applies only to parties that have “agreed to conduct transactions by electronic means”, judged “from the context and surrounding circumstances, including the parties’ conduct”. Replying to a PDF contract by email with it signed is usually that conduct. For consumers, ESIGN adds formal consent rules before required notices can be sent electronically.
- Attribution and integrity. Someone must be able to show that the signature was the act of the person named, and that the document is the one they signed. UETA says attribution “may be shown in any manner”. This is where the method matters: an image proves little on its own, an audit trail records who did what, and a certificate-based digital signature shows whether the file changed.

_[Figure: Will this electronic signature hold up? — The questions a court or the other side asks, in order.]_

## United States: ESIGN, UETA and New York

The federal Electronic Signatures in Global and National Commerce Act of 2000 (ESIGN), at 15 U.S.C. §7001 onward, applies to “any transaction in or affecting interstate or foreign commerce”. Its core rule is that a signature, contract or other record “may not be denied legal effect, validity, or enforceability solely because it is in electronic form”, and a contract may not be denied effect “solely because an electronic signature or electronic record was used in its formation” (https://www.law.cornell.edu/uscode/text/15/7001).

Its definition is deliberately broad: an electronic signature is “an electronic sound, symbol, or process, attached to or logically associated with a contract or other record and executed or adopted by a person with the intent to sign the record” (15 U.S.C. §7006(5), https://www.law.cornell.edu/uscode/text/15/7006). A typed name, a scanned signature, a drawn one, a click on “I agree” or a recorded “yes” on a call can all qualify. ESIGN does not force anyone to accept electronic signatures: apart from government agencies in some cases, using them is voluntary.

Where a law requires information to be given to a consumer in writing, ESIGN allows an electronic version only if the consumer has affirmatively consented, was first told of their right to paper copies and to withdraw consent, was told what hardware and software they need, and consented electronically in a way that shows they can open the format used (§7001(c)). That is why banks and insurers ask you to tick an electronic-delivery consent before sending statements by email.

### What ESIGN does not cover (15 U.S.C. §7003)

ESIGN’s general rule does not apply to a record to the extent it is governed by rules on the creation and execution of wills, codicils or testamentary trusts; by state law on adoption, divorce or other matters of family law; or by the Uniform Commercial Code, except sections 1-107 and 1-206 and Articles 2 and 2A. Nor does it apply to court orders, notices or official court documents, including briefs and pleadings, required in court proceedings; to notices cancelling or terminating utility services; to notices of default, acceleration, repossession, foreclosure or eviction, or the right to cure, under a credit or rental agreement for a person’s primary residence; to notices cancelling health or life insurance benefits (annuities excepted); to product recall or safety-failure notices; or to documents that must travel with hazardous materials (https://www.law.cornell.edu/uscode/text/15/7003).

The exceptions mean ESIGN does not help; they do not automatically forbid electronic signing. Whether an electronic will or court filing is valid depends on the specific state law or court rule, and many courts now have their own e-filing rules.

### UETA: the state-level rule

The Uniform Electronic Transactions Act, a model law published by the Uniform Law Commission in 1999, says the same thing at state level: a record or signature “may not be denied legal effect or enforceability solely because it is in electronic form”, and “if a law requires a signature, an electronic signature satisfies the law” (UETA §7). It defines an electronic signature almost exactly as ESIGN does (§2(8)), applies only between parties that have agreed to transact electronically (§5(b)), and says a signature is attributable to a person “if it was the act of the person”, which “may be shown in any manner” (§9). The model act itself excludes only wills, codicils and testamentary trusts, most of the UCC and the Uniform Computer Information Transactions Act, and leaves each state to add its own exclusions (§3). We read the 1999 text in a copy of the final act; the Uniform Law Commission’s own committee page is at https://www.uniformlaws.org/committees/community-home?CommunityKey=2c04b76c-2b7d-4399-977e-d5876ba7e034.

According to a January 2026 report by the New York City Bar Association, UETA “has been enacted in all 49 other states as well as Washington D.C., Puerto Rico and the Virgin Islands” (https://www.nycbar.org/reports/modernizing-new-york-electronic-signatures-esra-ueta/). Some states changed the text when they enacted it, so the details of a particular state’s version can differ.

### New York: the Electronic Signatures and Records Act

New York has its own law instead of UETA. It says an electronic signature “may be used by a person in lieu of a signature affixed by hand” and “shall have the same validity and effect” (State Technology Law §304(2), https://www.nysenate.gov/legislation/laws/STT/304). Its exclusions are wider than UETA’s: documents disposing of a person or property on death or incompetence or appointing a fiduciary, “including, without limitation, wills, trusts, decisions consenting to orders not to resuscitate, and powers of attorney”, and negotiable instruments and documents of title unless held in a single unique electronic version (§307, https://www.nysenate.gov/legislation/laws/STT/307). The Senate site already shows a future version, effective 12 December 2027, that makes room for electronic wills executed under the estates law, so check the current text if you are reading this later.

## European Union: eIDAS, and simple, advanced and qualified signatures

Regulation (EU) No 910/2014, known as eIDAS, applies directly in every EU member state (https://eur-lex.europa.eu/eli/reg/2014/910/oj). It defines three levels. An electronic signature is “data in electronic form which is attached to or logically associated with other data in electronic form and which is used by the signatory to sign” (Article 3(10)); that covers a typed name, a scanned image or a click. An advanced electronic signature is one that meets Article 26. A qualified electronic signature is “an advanced electronic signature that is created by a qualified electronic signature creation device, and which is based on a qualified certificate for electronic signatures” (Article 3(12)).

Article 26 sets the four requirements for an advanced signature: it is uniquely linked to the signatory; it is capable of identifying the signatory; it is created using signature creation data the signatory can, with a high level of confidence, use under their sole control; and it is linked to the data signed so that any later change is detectable.

The legal effect is in Article 25. Any electronic signature “shall not be denied legal effect and admissibility as evidence in legal proceedings solely on the grounds that it is in an electronic form or that it does not meet the requirements for qualified electronic signatures”, and “a qualified electronic signature shall have the equivalent legal effect of a handwritten signature”. The first rule is a floor, not a guarantee: a simple signature is admissible, but a court weighs it like any other evidence. Only the qualified kind is automatically equal to a handwritten signature, and only qualified signatures are recognised as such across the EU.

Regulation (EU) 2024/1183, which amended eIDAS to create the European Digital Identity Wallet and entered into force in May 2024, left these definitions and Articles 25(1), 25(2) and 26’s four requirements unchanged; it deleted the old Article 25(3) on cross-border recognition, which is now handled elsewhere in the Regulation, and added a paragraph on reference standards for advanced signatures (https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32024R1183). eIDAS does not say which documents need handwriting or a notary; each member state’s own law still does, and wills, real-estate transfers and notarial acts commonly keep their national forms.

## United Kingdom: what the law is in England and Wales

The Electronic Communications Act 2000 makes electronic signatures admissible as evidence of authenticity and integrity (section 7(1)) and defines one as anything in electronic form that is associated with electronic data and “purports to be used by the individual creating it to sign” (section 7(2), https://www.legislation.gov.uk/ukpga/2000/7/section/7). Whether an electronic signature satisfies a legal requirement for a signature comes from the common law, which the Law Commission set out in its 2019 report on the electronic execution of documents (Law Com No 386, https://lawcom.gov.uk/project/electronic-execution-of-documents/).

Its statement of the law, which the Government accepted in March 2020, is that “an electronic signature is capable in law of being used to execute a document (including a deed) provided that (i) the person signing the document intends to authenticate the document and (ii) any formalities relating to execution of that document are satisfied”. The report lists forms the courts have accepted: a name typed at the bottom of an email (Golden Ocean Group v Salgaocar Mining Industries, 2012), clicking an “I accept” box on a website (Bassano v Toft, 2014) and the header of a SWIFT banking message.

Formalities are where electronic signing stops. A deed signed by an individual must be signed “in the presence of a witness who attests the signature” (Law of Property (Miscellaneous Provisions) Act 1989, section 1(3), https://www.legislation.gov.uk/ukpga/1989/34/section/1), and the Law Commission’s view is that this “requires the physical presence of that witness”, even when both of them sign electronically. For wills, the Wills Act 1837 requires signing in the presence of two witnesses present at the same time; a temporary rule allowing video witnessing covered only wills made from 31 January 2020 to 31 January 2024, and the Government decided not to allow electronic signatures on wills at all, citing “the risks of undue influence or fraud” (https://www.gov.uk/guidance/guidance-on-making-wills-using-video-conferencing).

Property is changing. HM Land Registry’s practice guide 82 accepts simple electronic signatures on some application forms, deeds signed electronically on a conveyancer-controlled platform with a physically present witness, and, from 1 June 2026, documents signed with qualified electronic signatures for registrable dispositions, where “there is no need for the signatures to be witnessed” (https://www.gov.uk/government/publications/electronic-signatures-accepted-by-hm-land-registry-pg82/practice-guide-82-electronic-signatures-accepted-by-hm-land-registry). The 2022 interim report of the Government’s industry working group concluded that “appropriate electronic signatures are a safe and effective way of entering into legally binding transactions of all kinds” (https://www.gov.uk/government/publications/industry-working-group-on-esignatures-interim-report). Scotland and Northern Ireland have their own rules on deeds and wills.

## Other countries

Most countries follow the same pattern: a general rule that electronic signatures are valid, a stronger tier for certificate-based signatures, and a list of documents left to older formalities. Each row below comes from the statute or official gazette text we opened on 30 September 2026; where a point could not be read in a primary source, the row says so.

**Electronic signatures in eight more countries (statute text read 30 September 2026)**
| Country | Main law | What counts | Notable exclusions and limits |
| --- | --- | --- | --- |
| Canada | PIPEDA Part 2 (federal); provincial acts, e.g. Ontario Electronic Commerce Act, 2000 | Ontario: “a legal requirement that a document be signed is satisfied by an electronic signature” (s.11); PIPEDA applies to listed federal laws only | Ontario excludes wills and codicils, trusts created by them, powers of attorney for financial affairs or personal care, negotiable instruments and documents of title (s.31) |
| Australia | Electronic Transactions Act 1999 (Cth); each state’s own act | A method that identifies the person and their intention, reliable as appropriate or proven in fact, with the recipient’s consent (s.10) | Regulations exclude laws such as the Bills of Exchange, Cheques and Corporations Acts; deeds and wills follow state law (New South Wales allows witnessing by audio-visual link) |
| India | Information Technology Act 2000, as amended in 2008 | Only digital signatures and the electronic techniques listed in the Act’s Second Schedule count as electronic signatures (ss.3, 3A, 5); contracts are not unenforceable solely for being electronic (s.10A) | First Schedule: negotiable instruments other than cheques, powers of attorney, trusts, wills, contracts for sale or conveyance of immovable property. The Aadhaar eSign entry in the Second Schedule could not be read in a primary source |
| Pakistan | Electronic Transactions Ordinance 2002 | A signature requirement “shall be deemed satisfied where electronic signatures or advanced electronic signature are applied” (s.7); advanced ones carry a presumption of authenticity (s.9) | Negotiable instruments, powers of attorney, most trusts, wills, contracts for sale or conveyance of immovable property (s.31) |
| United Arab Emirates | Federal Decree-Law No. 46 of 2021 | A means that identifies the person and their intention, appropriate or proven (Art. 8); a qualified signature is equal to a handwritten one (Art. 18(3)) | The Cabinet may exclude transactions (Art. 2(2)); the list of exclusions, expected in the Executive Regulations, could not be read in a primary source |
| Nigeria | Evidence Act 2011 (amended 2023); Cybercrimes Act 2015 | An electronic or digital signature satisfies a rule requiring a signature and may be proved in any manner (Evidence Act s.93); e-signatures for purchases and other transactions “shall be binding” (Cybercrimes Act s.17) | Wills, birth and death certificates, family-law matters, court orders and documents including affidavits, utility cancellations, hazardous-materials documents, drug-withdrawal orders (s.17(2)); a 2024 amendment was not read |
| South Africa | Electronic Communications and Transactions Act 2002 | Where a law requires a signature without saying which kind, only an accredited advanced electronic signature will do (s.13(1)); otherwise electronic signatures have legal force (s.13(2)–(3)) | Alienation of land, leases over 20 years, wills and codicils, bills of exchange (Schedule 2); read in the 2002 text, later amendments not checked |
| Brazil | Medida Provisória 2.200-2/2001; Lei 14.063/2020 | Documents signed with an ICP-Brasil certificate are presumed true against the signers; other methods are valid if the parties accept them (MP art. 10) | For dealings with public bodies, simple, advanced and qualified tiers apply, and a qualified signature is required for transfers and registration of real estate (Lei 14.063 art. 5) |

Sources: Canada https://laws-lois.justice.gc.ca/eng/acts/P-8.6/FullText.html and https://www.ontario.ca/laws/statute/00e17; Australia https://www.legislation.gov.au/C2004A00553/latest/text and https://legislation.nsw.gov.au/view/whole/html/inforce/current/act-2000-008; India, the Act and the 2008 amendment as published by the Ministry of Electronics and IT, https://www.meity.gov.in/static/uploads/2024/03/ITbill_2000.pdf and https://www.meity.gov.in/static/uploads/2024/03/IT_amendment_act2008-1_0.pdf; Pakistan https://pakistancode.gov.pk/pdffiles/administratordbc98dd49f2df3b1d07bb986dcceb9a3.pdf; UAE https://uaelegislation.gov.ae/en/legislations/1539; Nigeria, the Evidence Act gazette copies on WIPO Lex (https://www.wipo.int/wipolex/en/legislation/details/22677 and https://www.wipo.int/wipolex/en/legislation/details/22678) and the Cybercrimes Act from the Nigerian Financial Intelligence Unit (https://www.nfiu.gov.ng/images/Downloads/downloads/cybercrime.pdf); South Africa https://www.gov.za/sites/default/files/gcis_document/201409/a25-02.pdf; Brazil https://www.planalto.gov.br/ccivil_03/mpv/antigas_2001/2200-2.htm and https://www.planalto.gov.br/ccivil_03/_ato2019-2022/2020/lei/l14063.htm.

Two patterns are worth noticing. India, Pakistan and South Africa exclude the same families of documents, wills, powers of attorney, trusts and land, that the United States and England treat specially. And several laws, India’s above all, give the full legal effect of a signature only to specified or certificate-based methods, so a simple image carries less weight there than under ESIGN or eIDAS.

## Simple, advanced, qualified and digital: what each proves

The words are used loosely, especially in advertising. In plain terms:

**Kinds of electronic signature and what each can prove**
| Kind | What it is | Proves who signed? | Proves the file is unchanged? | Typical use |
| --- | --- | --- | --- | --- |
| Simple electronic signature | A typed name, a drawn or scanned signature placed on a page, a click on “I agree” | Only through surrounding evidence (emails, account, conduct) | No | Most everyday contracts, forms, quotes, NDAs |
| Simple signature with an audit trail | A signing service records email address, times, IP address and each step | Better: the record links the act to an email account | The service’s record of the final file | Employment, sales and leasing paperwork |
| Digital signature (certificate-based) | A cryptographic value over the file made with a private key and a certificate | As well as the certificate identifies you: a self-made certificate proves nothing about identity | Yes: any later change is detectable | Sealing PDFs, company documents, e-invoices |
| Advanced electronic signature (eIDAS) | Uniquely linked to and capable of identifying the signer, under their sole control, change-detectable | Yes, by design | Yes | Higher-value contracts in the EU |
| Qualified electronic signature (eIDAS) | Advanced, made on a certified device, with a qualified certificate after identity checks | Yes, with a checked identity | Yes | Equal to handwriting in the EU; some UK property dispositions |

“Digital signature” is a technology, not a legal category. A digital signature made with a certificate from a trusted provider can be part of an advanced or qualified signature; one made with a certificate you generated yourself shows the file has not changed, but anyone can create a certificate in any name, so it proves nothing about who you are.

## Which documents can be signed electronically

The table gives the usual position for common documents. It is a starting point for the US (federal ESIGN and state UETA, with New York noted), the EU (eIDAS plus national law) and England and Wales. Local rules, contract terms and the other party’s requirements can all change the answer.

**Common documents and electronic signatures: the usual position**
| Document | United States | European Union | England and Wales |
| --- | --- | --- | --- |
| Everyday contracts, sales, services | Yes (ESIGN, UETA) | Yes; simple signature admissible | Yes, if intended as a signature |
| Quotes and estimates accepted by the client | Yes | Yes | Yes |
| Invoices and receipts | Yes; no signature usually required | Yes; e-invoicing has its own rules | Yes |
| Employment contracts and offer letters | Yes | Usually yes; check national employment law | Yes |
| NDAs | Yes | Yes | Yes |
| Residential leases | Usually yes; eviction and default notices are outside ESIGN | Usually yes; check national tenancy law | Yes for most; a legal lease over three years must be made by deed (Law of Property Act 1925, ss.52 and 54) |
| Powers of attorney | Varies by state; excluded under New York’s law | National law; often notarised | Lasting powers of attorney have their own procedure |
| Wills and testamentary trusts | Outside ESIGN and UETA; state wills law decides (the Uniform Law Commission has a model Electronic Wills Act) | National law; generally handwritten or notarial | No: wet ink and two physically present witnesses |
| Deeds | Depends on state recording law | National law; often notarial | Electronic signature possible, but the witness must be physically present |
| Real-estate transfers | Depends on state recording law and the county recorder | Usually notarial deed | Via Land Registry routes, including qualified signatures from June 2026 |
| Court filings | Outside ESIGN; each court’s e-filing rules apply | National procedure | Court rules apply |
| Adoption, divorce, family-law papers | Outside ESIGN | National law | Court and family procedure rules |
| Utility shut-off, foreclosure, eviction, insurance cancellation notices | Outside ESIGN; paper notice often required | National law | Specific statutory notice rules |

## Evidence in practice: what your signed PDF proves

Suppose you receive a lease renewal as a PDF, place your signature and the date on it with a browser tool, and email it back. What does the file prove? That someone put an image of your signature on it. On its own it does not show who did that, when, or that the file has not been changed since, because anyone with the image could place it and anyone with a PDF editor could alter the text. That sounds weak, but it is also true of a paper signature scanned and emailed, and courts deal with it the same way: through the surrounding evidence.

- The email trail: the landlord sent the lease to your address, you replied from it with the signed copy, and later messages refer to it.
- Conduct: you paid the new rent, moved in, or started the work described in the quote.
- Consistency: the signature matches the one you use elsewhere, and the copies each side holds are identical.

Two things strengthen a signed PDF when more is at stake. A signing service with an audit trail records the email address it was sent to, the times it was opened and signed and the IP addresses used, and issues a completion certificate; that is the main reason businesses pay for them. A certificate-based digital seal over the finished file shows whether it was changed after signing; with a certificate from a trusted provider, it can also show who applied it. [Sign PDF](/tools/sign-pdf) on this site produces the simple kind by default and can add a digital seal on your device, with a certificate you make there (integrity only) or your own certificate file.

For the quotes and invoices that most small businesses sign, the practical steps are simple: send the document from and to known email addresses, keep the signed copy and the email it came with, and make the acceptance explicit. [How to write an estimate](/blog/business/how-to-write-an-estimate) and [Quote deposits and validity periods](/blog/business/quote-deposit-and-validity) cover what an accepted quote should say, and [How to invoice as a freelancer](/blog/business/how-to-invoice-as-a-freelancer) covers signed agreements and stage payments. Agreements, leases and notices to adapt are on the [Word templates](/word-templates) page.

## Frequently asked questions

**Can I sign a contract with a typed name?**

In most cases, yes. ESIGN, UETA, eIDAS and English law all accept a typed name as an electronic signature if you meant it as your signature on that document. English courts have accepted a name typed at the end of an email. It is weaker evidence than a drawn signature with an audit trail, and it is not enough for documents that need witnesses or specific forms.

**Is a photo or image of my signature valid?**

It can be. An image of your signature placed on a document with the intent to sign is a simple electronic signature. HM Land Registry, for example, lists “a scanned manuscript signature added to an electronic document” among simple electronic signatures. Whether it proves you signed depends on the surrounding evidence.

**Do both parties have to sign electronically?**

No. One side can sign on paper and the other electronically; what matters is that each signature is valid for its signer. Under UETA both parties must have agreed to deal electronically, which their conduct usually shows.

**What documents cannot be signed electronically?**

Commonly: wills and testamentary trusts; many deeds and documents that must be witnessed or notarised; some family-law and court documents; certain real-estate transfers; and, in the US, notices such as utility shut-offs, foreclosures, evictions and insurance cancellations. The exact list depends on the country and, in the US, the state.

**Is DocuSign more legal than a signature image?**

Not in kind: both are electronic signatures and both are recognised. What a signing service adds is evidence, an audit trail of who received and signed the document and when. That can matter a great deal in a dispute, which is why it is worth using for high-value agreements.

**What is the difference between an electronic signature and a digital signature?**

An electronic signature is any electronic mark used to sign, including a typed name or an image. A digital signature is a cryptographic technique: a value calculated from the file with a private key and certificate, which shows whether the file was changed afterwards and, with a trusted certificate, who signed it.

**Are electronic signatures valid in the UK?**

Yes. The Law Commission’s 2019 statement, accepted by the Government, is that an electronic signature can execute a document, including a deed, if the signer intends to authenticate it and any formalities are met. Deeds still need a physically present witness, and wills cannot be signed electronically in England and Wales.

**What makes an e-signature enforceable?**

Intent to sign, agreement to deal electronically, and evidence tying the signature to the person and the document to its signed form. Keep the signed file and the emails around it, and use a signing service or a digital signature for documents where you expect a dispute.

**Does a qualified electronic signature equal a handwritten one?**

In the EU, yes: Article 25(2) of eIDAS gives a qualified electronic signature “the equivalent legal effect of a handwritten signature”. It needs a qualified certificate from a trust service provider on an EU trusted list, issued after an identity check, and a certified signing device.

Tool: [Make your signature image](https://dothecalculation.com/tools/signature-maker) — Draw it, type it in a handwriting font, or photograph your paper signature and remove the paper. Transparent PNG and SVG, made in your browser.

More guides on quotes, invoices and running a small business are in the [business guides](/blog/business).

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_Source: [Do The Calculation](https://dothecalculation.com/blog/business/are-electronic-signatures-legally-binding). Quote freely with attribution and a link to this page._