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diff --git a/lynx_help/keystrokes/follow_help.html b/lynx_help/keystrokes/follow_help.html new file mode 100644 index 0000000..1c9ca08 --- /dev/null +++ b/lynx_help/keystrokes/follow_help.html @@ -0,0 +1,286 @@ +<!-- $LynxId: follow_help.html,v 1.17 2021/07/01 21:02:38 tom Exp $ --> +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"> +<html> +<head> + <meta name="generator" content= + "HTML Tidy for HTML5 for Linux version 5.6.0"> + <title>Help on the Follow link (or page) number feature</title> + <link rev="made" href="mailto:lynx-dev@nongnu.org"> + <meta http-equiv="Content-Type" content= + "text/html; charset=us-ascii"> + <meta name="description" content= + "Lynx allows the user to select a link using a single-digit shortcut. There are several configuration choices which apply to this feature."> +</head> +<body> + <div class="nav"> + <ul> + <li><a href="#overview">Overview</a></li> + + <li><a href="#numbering">Zero and other digits</a></li> + + <li><a href="#suffixes">Suffixes</a></li> + + <li><a href="#form_fields">Specifics for Form Fields</a></li> + + <li><a href="#hidden_links">Hidden Links</a></li> + + <li><a href="#goto_hidden_link">Navigating to Hidden + Links</a></li> + </ul> + </div> + + <h2><a name="overview" id="overview">Overview</a></h2> + + <p>If a user has set one of these modes, (as the default or for + the current session via the <em>Options menu</em>) then hypertext + links (and form fields, depending on the keypad mode) are + prefixed with numbers in square brackets:</p> + + <ul> + <li><em>Keypad mode</em> to <em>Links are numbered</em>, + or</li> + + <li><em>Form fields are numbered</em>, or</li> + + <li><em>Links and form fields are numbered</em> + </li> + </ul> + + <p>Entering a keyboard or keypad number is treated as an + <em>F_LINK_NUM</em> command, and should invoke the <em>Follow + link (or goto link or page) number:</em> statusline prompt for a + potentially multiple digit number corresponding to an indicated + link number.</p> + + <h2><a name="numbering" id="numbering">Zero and other digits</a></h2> + + <p>The prompt can be invoked via typing a zero (<em>0</em>), but + it will not be treated as the lead digit for the number entry, + whereas digits 1 through 9 both invoke the prompt and are treated + as the first digit.</p> + + <p>In <em>Form fields are numbered</em> or <em>Links and form + fields are numbered</em> mode, if the number corresponds to a + form field you will be positioned on that field, but if it is a + submit button it will not be ACTIVATE-ed.</p> + + <p>If the user has set <em>Keypad mode</em> to <em>Numbers act as + arrows</em>, then only a zero digit will be treated as an + <em>F_LINK_NUM</em> command for invoking the <em>Follow link (or + goto link or page) number:</em> prompt.</p> + + <h2><a name="suffixes" id="suffixes">Suffixes</a></h2> + + <p>After accepting a number at the prompt, <strong>Lynx</strong> + accepts an optional suffix:</p> + + <dl> + <dt><em>RETURN</em> (activate)</dt> + + <dd>Without a suffix, e.g., If <em>RETURN</em> is pressed to + terminate the number entry (e.g., <em>123</em>) and it + corresponds to a hypertext link, <strong>Lynx</strong> will + retrieve the document for that link as if you had paged or used + other navigation commands to make it the current link and then + ACTIVATE-ed it.</dd> + + <dt><code><strong>g</strong></code> (go)</dt> + + <dd> + <p>If the number entered at the prompt has a + “<em>g</em>” suffix (e.g., <em>123g</em>), then + <strong>Lynx</strong> will make the link corresponding to + that number the current link, paging as appropriate if the + link does not appear in the currently displayed page. The + “<em>g</em>” suffix is inferred (need not be + entered) for form fields in <em>Form fields are numbered</em> + or <em>Links and form fields are numbered</em> mode.</p> + </dd> + + <dt><code><strong>p</strong></code> (page)</dt> + + <dd> + <p>Alternatively, if the number is given a + “<em>p</em>” suffix (e.g., <em>123p</em>), + <strong>Lynx</strong> will make the page corresponding to + that number the currently displayed page, and the first link + on that page, if any, the current link. The + “<em>g</em>” and “<em>p</em>” + suffixes thus convert the <em>Follow link (or goto link or + page) number:</em> feature to an advanced navigation aid.</p> + </dd> + + <dt><code><strong>+</strong></code> or + <code><strong>-</strong></code> (jump)</dt> + + <dd> + <p>Finally, a user may add a <em>+</em> or <em>-</em> suffix + to a number command to indicate jumping forward or back + relative to the current link or page. For example, typing + <em>1g+</em> followed by RETURN will move the current link to + the next numbered link, skipping any intervening pages or + unnumbered links; <em>1g-</em> goes to the preceding numbered + link. On a page without links, <em>3g+</em> goes to the 3rd + link <em>following</em> the page. <em>5p+</em> skips ahead 5 + pages, and so on. You can also enter <em>5+</em> or + <em>5-</em>, which will activate the 5th link ahead/behind + where you are currently positioned. Note that typing + <em>1g+</em> is different from typing a down arrow in that + <em>1g+</em> skips pages containing no links, or intervening + non-numbered links, such as form fields when form fields are + not numbered. It also differs from the <em><tab></em> + command in that <em>1g+</em> does not skip over whole + textareas, unless form fields are not numbered.</p> + + <p><em>NOTE:</em> <em>1+g 1-g 1+p 1-p</em> are all recognized + as equivalent to <em>1g+ 1g- 1p+ 1p-</em> . Any other + (mistyped) characters end the formula: e.g. <em>1gh+</em> is + treated as <em>1g</em>.</p> + </dd> + </dl> + + <h2><a name="form_fields" id="form_fields">Specifics for Form + Fields</a></h2> + + <p>Numbers are associated with form fields only when</p> + + <ul> + <li><em>Form fields are numbered</em> or</li> + + <li><em>Links and form fields are numbered</em> mode has been + selected.</li> + </ul> + + <p>If you have selected <em>Numbers act as arrows</em> or + <em>Links are numbered</em> mode, you can seek form fields in the + document via WHEREIS searches for strings in their displayed + values. If they are INPUT or TEXTAREA fields with no values as + yet, you can use two or more underscores as the search string, + because underscores are used as placeholders for form fields in + the displayed document.</p> + + <p id="select-option">When you have invoked a popup window for a + list of OPTIONs in a form's SELECT block:</p> + + <ul> + <li>each OPTION is associated with a number, and that number + will be displayed in <em>Form fields are numbered</em> or + <em>Links and form fields are numbered</em> mode.</li> + + <li>In any keypad mode, the <em>F_LINK_NUM</em> + (“<em>0</em>”) command will invoke a <em>Select + option (or page) number:</em> prompt, and you can enter a + number, and optionally a “<em>g</em>” or + “<em>p</em>” suffix, to select or seek an OPTION in + that list.</li> + + <li>If only a number is entered at the prompt, the + corresponding OPTION will be selected and the popup will be + retracted.</li> + + <li>If the “<em>g</em>” suffix is included, then + you will be positioned on the corresponding OPTION in the list, + paging through the list if necessary, but it will not be + treated as selected unless you enter the ACTIVATE (RETURN or + right-arrow) command when positioned on the OPTION.</li> + + <li>For purposes of paging (e.g., in conjunction with the + “<em>p</em>” suffix), a <em>page</em> is defined as + the number of OPTIONs displayed within the vertical dimension + of the popup window.</li> + + <li>Finally, the <em>+</em> and <em>-</em> suffixes can be used + to move forward or back from the current option or page in a + popup menu, similarly to the way they are used for links.</li> + </ul> + + <p>For example, while viewing a popup window, the user can type + <em>3p+</em> and RETURN to skip ahead 3 pages, and <em>50g-</em> + will move the current selection back 50 options. This will work + whether or not <em>keypad mode</em> is <em>Form fields are + numbered</em> or <em>Links and form fields are numbered</em> + since options are numbered internally. If form field numbering is + turned off, the option numbers will not appear on screen, but the + user can still navigate using these commands.</p> + + <h2><a name="hidden_links" id="hidden_links">Hidden Links</a></h2> + + <p>HTML can be structured so that it includes <em>hidden + links</em>, i.e., without a visible link name intended for + ACTIVATE-ing the link. Such links may be created, for example, + by</p> + + <ul> + <li>making an IMG element the sole content of an Anchor + element, and including an ALT="" attribute name/value pair to + suppress access to the link when the browser does not have + support for image handling available.</li> + + <li>having truly empty Anchor content, in cases for which the + value of an Anchor's HREF attribute is intended as a navigation + aid for robots (typically indexers) and not as content for a + browser's rendition of the document.</li> + + <li>using the <em>-ismap</em> command line switch, which makes + <strong>Lynx</strong> additionally treat a link to a + server-side image maps as hidden if there also is a client-side + map for the same image.</li> + + <li>bad HTML, which may produce <em>hidden links</em>.</li> + </ul> + + <p><em>Hidden links</em> differ from Anchors that have only a + NAME or ID attribute name/value pair (intended as positioning + targets from other links which do have HREF attributes and values + that include a fragment).</p> + + <p><strong>Lynx</strong> respects instructions for <em>hidden + links</em> and normally does not include them in the rendition of + the document. However, if the command line switch + <em>-hiddenlinks=merge</em> is used, such links will still be + numbered in sequence with other links which are not hidden, and + if <em>Links are numbered</em> mode is also on, link numbers will + appear for them in the displayed text (except for links to image + maps which are hidden because of <em>-ismap</em>). If + <em>-hiddenlinks=listonly</em> or <em>-hiddenlinks=ignore</em> is + in effect, <em>hidden links</em> will not be shown in the text + even in <em>links are numbered</em> mode. Not using a + <em>-hiddenlinks</em> flag at all is equivalent to + <em>-hiddenlinks=listonly</em>.</p> + + <h2><a name="goto_hidden_link" id="goto_hidden_link">Navigating + to Hidden Links</a></h2> + + <p>If a document includes <em>hidden links</em>, they will be + reported, with appropriate labeling, in the menus created for the + LIST (“<em>l</em>”) or ADDRLIST + (“<em>A</em>”) commands, unless + <em>-hiddenlinks=ignore</em> is used. They can then be + ACTIVATE-ed via those menus.</p> + + <p>If a link was hidden because of an ALT attribute in an IMG + element, it will be converted to a <em>visible link</em> whenever + the IMAGE_TOGGLE (“<em>*</em>”) command is used to + create links for SRC attribute values of IMG elements, because + this indicates that the user does have some form of image + handling enabled via a helper application, or wishes to download + files for subsequent use with a graphic browser or other suitable + software.</p> + + <p>HTML forms may have fields with a HIDDEN attribute, indicating + that a name/value pair for the fields should be included in the + content submitted for the form, but the value should not be + displayed in the rendered form. <strong>Lynx</strong> respects + this attribute as well, and neither displays the HIDDEN field, + nor assigns it a number for the F_LINK_NUM + (“<em>0</em>”) command and <em>Form fields are + numbered</em> or <em>Links and form fields are numbered</em> + keypad mode handling, nor includes an entry for it in the menus + created for the LIST (“<em>l</em>”) or ADDRLIST + (“<em>A</em>”) commands. However, the HIDDEN + name/value pairs are included in any displays of submitted form + content in the <em>Information about the current document</em> + that is invoked by the INFO (“<em>=</em>”) + command.</p> +</body> +</html> |