Changes

<span id="csdoc_access_level"></span>{{tracked|T225430}}Citations of online sources that require registration or a subscription are acceptable in Wikipedia as documented in [[WP:PAYWALL|Verifiability § Access to sources]]<!-- {{Section link|Wikipedia:Verifiability|Access to sources}} -->. As a courtesy to readers and other editors, editors should <!-- can --> signal the access restrictions of the external links included in a citation. {{lang|la|Nota bene}}: access icons do not display correctly for editors who use Modern skin.

<!-- There are four access levels split between the url-holding parameters and the identifier parameters. -->Four access levels can be used:

<!-- ====Access level of url-holding parameters==== --><!--There are several url-holding parameters. Each may be marked with an access icon. Links inserted with any of the url-holding parameters are expected to be free-to-read by default, so {{para|url-access|free}} is not valid. For a URL that is not free-to-read, editors may use the matching access-icon parameter with the appropriate keyword. {| class=wikitable|+url-holding parameter access icons! url parameter !! access icon parameter !! supported keywords|-| {{para|url}} || {{para|url-access}} ||rowspan=7|{{plainlist|* <code>subscription</code> – [[File:Lock-red-alt-2.svg|9px|link=|alt=Paid subscription required|Paid subscription required]] – the source is only accessible via a paid subscription* <code>registration</code> – [[File:Lock-gray-alt-2.svg|9px|link=|alt=Free registration required|Free registration required]] – a free registration is required to access the source* <code>limited</code> – [[File:Lock-gray-alt-2.svg|9px|link=|alt=Free access subject to limited trial, subscription normally required|Free access subject to limited trial, subscription normally required]] – there are other constraints (such as a cap on daily views) to freely access this source}}|-| {{para|article-url}} || {{para|article-url-access}}|-| {{para|chapter-url}} || {{para|section-url-access}}|-| {{para|contribution-url}} || {{para|section-url-access}}|-| {{para|entry-url}} || {{para|section-url-access}}|-| {{para|map-url}} || {{para|section-url-access}}|-| {{para|section-url}} || {{para|section-url-access}}|}-->Sources linked by {{para|url}}, {{para|article-url}}, {{para|chapter-url}}, {{para|contribution-url}}, {{para|entry-url}}, {{para|articlemap-url}}, and {{para|section-url}} are presumed to be free-to-read. <ref name=NotRef>{{NotRef}}</ref> When they are not free-to-read, editors should mark those sources with the matching access-indicator parameter so that an appropriate icon is included in the rendered citation. Because the sources linked by these url-holding parameters are presumed to be free-to-read, they may not be marked as <code>free</code>.

|+ urlURL-holding and access-indicator parameters

! url URL !! access Access !! allowed Allowed keywords

| {{para|url}} || {{para|url-access}} || rowspan="67" | <code>registration</code> [[File:Lock-gray-alt-2.svg|9px|link=|alt=Free registration required|Free registration required]]<br /><code>limited</code> [[File:Lock-gray-alt-2.svg|9px|link=|alt=Free access subject to limited trial, subscription normally required|Free access subject to limited trial, subscription normally required]]<br /><code>subscription</code> [[File:Lock-red-alt-2.svg|9px|link=|alt=Paid subscription required|Paid subscription required]]

| {{para|contribution-url}} || {{para|chaptercontribution-url-access}}{{dagger}}

|+ namedNamed-identifier and access-indicator parameters

! identifierIdentifier!! access Access !! allowed Allowed keywords

| {{para|bibcode}} || {{para|bibcode-access}} || rowspan="67" | <code>free</code> [[File:Lock-green.svg|9px|link=|alt=Freely accessible|Freely accessible]]

| {{para|hdl}} || {{para|hdl-access}}{{dagger}}