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  • HTML Math
    doesn t provide direct support for multi line equations as this can be effectively handled by combining math with the TABLE element Example the integral from a to b of f x over 1 x MATH int a b f x over 1 x dx MATH which can be rendered on a fixed pitch text only medium as b f x dx 1 x a The example uses and as shortrefs for BOX and BOX respectively This is used for invisible brackets stretchy delimiters and integral signs and placing one thing over another The shortref characters and are used for subscripts and superscripts respectively HTML math follows general practice in mathematical typesetting by rendering functions numbers and other constants in an upright font while variables are rendered in an italic font You can set particular terms in a bold face and for chemical formulae you can force the use of an upright font Limits for symbols like the integral and summation signs are placed directly above below the symbol or to the immediate right depending on the symbol Spacing between constants variables and operators is determined automatically Additional spacing can be inserted with entities such as thinsp sp and quadsp White space in the markup is used only to delimit adjacent variables or constants You don t need spaces before or after binary operators or other special symbols as these are recognised by the HTML math tokeniser White space can be useful though for increased legibility while authoring I need to check on the ISO entity names for spacing Math Markup The following elements are permitted within MATH elements BOX Used for hidden brackets stretchy delimiters and placing one expression over another e g numerators and denominators SUB SUP Subscripts and superscripts Also used for limits ABOVE Used to draw an arrow line or symbol above an expression BELOW Used to draw an arrow line or symbol below an expression VEC BAR DOT DDOT HAT TILDE These are convenience tags for common accents as an alternative to using ABOVE SQRT ROOT For square roots and other roots of an expression ARRAY For matrices and other kinds of arrays TEXT Used to include a short piece of text within a math element and often combined with SUB or SUP elements B T BT These elements are used override the default rendering B renders the enclosed expression in an bold face T designates a term to be rendered in an upright font while BT designates a term to be rendered in a bold upright font The class attribute can be used to describe the kind of term e g vector tensor or matrix HTML Math Entities Functions Operators Continuation dots Greek letters Relations Accents arrows and pointers Delimiters Other symbols Spacing entities Rendering HTML Math The expression is rendered in three steps The first step recursively parses expressions building up a matching hierarchy of data structures with bounding boxes corresponding to sequences of nested expressions The math tokeniser needs to be able

    Original URL path: http://web.teipir.gr/HTML_3.0/maths.html (2016-02-14)
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  • Horizontal Rules
    the most general class on the left and the most specific on the right where classes are separated by a period The CLASS attribute is most commonly used to attach a different style to some element but it is recommended that where practical class names should be picked on the basis of the element s semantics as this will permit other uses such as restricting search through documents by matching on element class names The conventions for choosing class names are outside the scope of this specification CLEAR This attribute is common to all block like elements When text flows around a figure or table in the margin you sometimes want to position the rule below the figure rather than alongside it The CLEAR attribute allows you to move down unconditionally clear left move down until left margin is clear clear right move down until right margin is clear clear all move down until both margins are clear Alternatively you can decide to place the rule alongside the figure just so long as there is enough room The minimum width needed is specified as clear 40 en move down until there is at least 40 en units free clear 100

    Original URL path: http://web.teipir.gr/HTML_3.0/rules.html (2016-02-14)
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  • Preformatted Text
    use is deprecated For example a verse from Shelley To a Skylark PRE Higher still and higher From the earth thou springest Like a cloud of fire The blue deep thou wingest And singing still dost soar and soaring ever singest PRE which is rendered as Higher still and higher From the earth thou springest Like a cloud of fire The blue deep thou wingest And singing still dost soar and soaring ever singest Permitted Attributes ID An SGML identifier used as the target for hypertext links or for naming particular elements in associated style sheets Identifiers are NAME tokens and must be unique within the scope of the current document LANG This is one of the ISO standard language abbreviations e g en uk for the variation of English spoken in the United Kingdom It can be used by parsers to select language specific choices for quotation marks ligatures and hypenation rules etc The language attribute is composed from the two letter language code from ISO 639 optionally followed by a period and a two letter country code from ISO 3166 CLASS This a space separated list of SGML NAME tokens and is used to subclass tag names By convention the class names are interpreted hierarchically with the most general class on the left and the most specific on the right where classes are separated by a period The CLASS attribute is most commonly used to attach a different style to some element but it is recommended that where practical class names should be picked on the basis of the element s semantics as this will permit other uses such as restricting search through documents by matching on element class names The conventions for choosing class names are outside the scope of this specification CLEAR This attribute is common

    Original URL path: http://web.teipir.gr/HTML_3.0/literal.html (2016-02-14)
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  • Admonishments
    Identifiers are NAME tokens and must be unique within the scope of the current document LANG This is one of the ISO standard language abbreviations e g en uk for the variation of English spoken in the United Kingdom It can be used by parsers to select language specific choices for quotation marks ligatures and hypenation rules etc The language attribute is composed from the two letter language code from ISO 639 optionally followed by a period and a two letter country code from ISO 3166 CLASS This a space separated list of SGML NAME tokens and is used to subclass tag names By convention the class names are interpreted hierarchically with the most general class on the left and the most specific on the right where classes are separated by a period The CLASS attribute is most commonly used to attach a different style to some element but it is recommended that where practical class names should be picked on the basis of the element s semantics as this will permit other uses such as restricting search through documents by matching on element class names Apart from the values suggested above the conventions for choosing class names are outside the scope of this specification CLEAR This attribute is common to all block like elements When text flows around a figure or table in the margin you sometimes want to start the note below the figure rather than alongside it The CLEAR attribute allows you to move down unconditionally clear left move down until left margin is clear clear right move down until right margin is clear clear all move down until both margins are clear Alternatively you can decide to place the note alongside the figure just so long as there is enough room The minimum width needed is

    Original URL path: http://web.teipir.gr/HTML_3.0/notes.html (2016-02-14)
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  • Footnotes
    fn2 indifferent honest a DL fn id fn1 i inoculate i graft fn fn id fn2 i relish of it i smack of it our old sinful nature fn fn id fn3 i indifferent honest i moderately virtuous fn Note If html recommended is active the HTML 3 0 DTD expects you to enclose plain text in a block element such as P e g FN ID fn23 P A simple footnote FN Permitted Attributes ID An SGML identifier used as the target for hypertext links or for naming particular elements in associated style sheets Identifiers are NAME tokens and must be unique within the scope of the current document LANG This is one of the ISO standard language abbreviations e g en uk for the variation of English spoken in the United Kingdom It can be used by parsers to select language specific choices for quotation marks ligatures and hypenation rules etc The language attribute is composed from the two letter language code from ISO 639 optionally followed by a period and a two letter country code from ISO 3166 CLASS This a space separated list of SGML NAME tokens and is used to subclass tag names By convention

    Original URL path: http://web.teipir.gr/HTML_3.0/footnotes.html (2016-02-14)
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  • Block Quotes
    Anglo Saxon poem Beowolf Cotton Vitellus A xv manuscript CREDIT BQ Note If html recommended is active the HTML 3 0 DTD expects you to enclose plain text in a block element such as P Permitted Attributes ID An SGML identifier used as the target for hypertext links or for naming particular elements in associated style sheets Identifiers are NAME tokens and must be unique within the scope of the current document LANG This is one of the ISO standard language abbreviations e g en uk for the variation of English spoken in the United Kingdom It can be used by parsers to select language specific choices for quotation marks ligatures and hypenation rules etc The language attribute is composed from the two letter language code from ISO 639 optionally followed by a period and a two letter country code from ISO 3166 CLASS This a space separated list of SGML NAME tokens and is used to subclass tag names By convention the class names are interpreted hierarchically with the most general class on the left and the most specific on the right where classes are separated by a period The CLASS attribute is most commonly used to attach a different style to some element but it is recommended that where practical class names should be picked on the basis of the element s semantics as this will permit other uses such as restricting search through documents by matching on element class names The conventions for choosing class names are outside the scope of this specification CLEAR This attribute is common to all block like elements When text flows around a figure or table in the margin you sometimes want to start the block quote below the figure rather than alongside it The CLEAR attribute allows you to move down

    Original URL path: http://web.teipir.gr/HTML_3.0/blockquotes.html (2016-02-14)
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  • The ADDRESS element
    spoken in the United Kingdom It can be used by parsers to select language specific choices for quotation marks ligatures and hypenation rules etc The language attribute is composed from the two letter language code from ISO 639 optionally followed by a period and a two letter country code from ISO 3166 CLASS This a space separated list of SGML NAME tokens and is used to subclass tag names By convention the class names are interpreted hierarchically with the most general class on the left and the most specific on the right where classes are separated by a period The CLASS attribute is most commonly used to attach a different style to some element but it is recommended that where practical class names should be picked on the basis of the element s semantics as this will permit other uses such as restricting search through documents by matching on element class names The conventions for choosing class names are outside the scope of this specification CLEAR This attribute is common to all block like elements When text flows around a figure or table in the margin you sometimes want to start the address element below the figure rather than alongside

    Original URL path: http://web.teipir.gr/HTML_3.0/address.html (2016-02-14)
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  • HTML Forms
    text entry field The form fields are laid out with several paragraph elements and an unordered list Notice the use of the NAME attribute to name each field TITLE Sample Questionaire TITLE H1 Sample Questionaire H1 P Please fill out this questionaire FORM METHOD post ACTION http www hal com sample P Your name input name name size 48 P input name male type radio Male P input name female type radio Female Number in family input name family type int P Cities in which you maintain a residence UL PLAIN LI input name city type checkbox value kent Kent LI input name city type checkbox value miami Miami LI Others textarea name other cols 48 rows 4 textarea UL P Nickname INPUT NAME nickname size 42 P Thank you for responding to this questionaire P INPUT TYPE SUBMIT INPUT TYPE RESET FORM Every form must be enclosed within a FORM element There can be several forms in a single document but the FORM element can t be nested The browser is responsible for handling the input focus i e which field will currently get keyboard input Many platforms have existing conventions for forms for example using Tab and Shift Tab to move the keyboard focus forwards and backwards between fields and using the Enter aka Return key to submit the form This standard defines and requires support for the HTTP access protocol only Under any protocol the submitted contents of the form logically consist of a list of name value pairs where the names are given by the NAME attributes of the various fields in the FORM Each field will normally be given a distinct name Several radio buttons can share the same name as this is how you specify that they belong to the same control group at any time only one button in the group can be selected Note The contents list of name value pairs excludes unselected radio buttons and checkboxes In general any field with a null value can be omitted from the contents list Client side scripts and fill out forms HTML 3 0 doesn t provide direct support for constraining the values entered into text fields or for derived fields whose values are calculated from the values of other fields Rather than extending the markup to support these features HTML 3 0 provides a means for associating the form with a script Support for scripts is not required however and the HTML 3 0 specification doesn t cover the scripting languages or the details of their interface with the user agent The SCRIPT attribute of the FORM element specifies the script via a URI The user agent down loads the script and interprets it locally Scripts handle a variety of messages for individual fields and the form as a whole These messages correspond to events such as Enter Leave Form for initialization and clean up When a field gains or loses the input focus Mouse clicks and drags over a field Keyboard events

    Original URL path: http://web.teipir.gr/HTML_3.0/forms.html (2016-02-14)
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