MathML Document Repository

Core Intent Property List

The data displayed below is derived from the YAML file core-properties.yml

Contents

• Fixity

  function , prefix , postfix , infix , silent

• Inference

  literal , common , legacy

• Table

  array , matrix , piecewise , system-of-equations , lines , continued-row , by-row , by-column , equation-label , no-equation-label

• Mathematical category

  number-set , largeop

• Units and currency

  unit , currency

• Number

  roman-numeral

• Geometry

  shape

• Chemistry

  chemical-element , chemical-equation

• Pause

  pause-short , pause-medium , pause-long , pause-xlong

Settings

Properties

Fixity

function

Effect: the function head is voiced followed by a connector such as “of” or “applied” to, followed by the arguments separated by connecting words such as “comma” or “and”

Applicability: intent function head

f:function(x,y)

English: f of x comma y

English: f of x and y

French: f de x et y

prefix

Effect: the function followed by the arguments are voiced, with no connecting words.

Applicability: intent function head

f:prefix(x,y)

English: f x y

postfix

Effect: the arguments followed by the function are voiced, with no connecting words.

Applicability: intent function head

f:postfix(x)

English: x f

infix

Effect: the arguments are voiced, separated by the function, which may be repeated if there are more than two arguments.

Applicability: intent function head

f:infix(x,y)

English: x f y

silent

Effect: the arguments are voiced with no connecting words. The function head is not read.

Applicability: intent function head

f:silent(x,y)

English: x y

Inference

literal

Effect: Assistive technology should not infer any semantics and just speak the elements with a literal interpretation. This includes speaking leaf content literally (e.g., | is spoken as “vertical bar”). If intent is present on a child element, it overrides this property.
See literal property

Applicability: all presentation elements

common

Effect: Assistive technology should use the specified common defaults.
See common property

Applicability: all presentation elements

legacy

Effect: Assistive technology should use its system specified defaults. This is the default behavior if neither the literal property nor common property is in effect. See legacy property

Applicability: all presentation elements

Table

array

Effect: the table should read the rows and columns with the default order row-first unless array:by-column is specified. If by-columns is used, column first order is used.

Applicability: mtable

:array:by-columns

 arg='m' intent=':array:by-column'>
 ab
 cd

$$\begin{array}{cc}a& b\\ c& d\end{array}$$

English: the 2 by 2 array; column 1; a; row 2; c; column 2; b; row 2; d

matrix

Effect: the table should be read in a style suitable for matrices

Applicability: mtable

:matrix

 intent='$m'>
 [
  arg='m' intent=':matrix'>
  ab
  cd
 
 ]

$$\left[\begin{array}{cc}a& b\\ c& d\end{array}\right]$$

English: the 2 by 2 matrix; column 1; a; column 2; b; column 1; c; column 2; d

piecewise

Effect: the table should be read in a style suitable for a piecewise definition

Applicability: mrow(mtable)

:piecewise

f stretchy="false">(x stretchy="false">)
=

  {
   intent=":piecewise" columnalign="right left" columnspacing="0" rowspacing=".2em">
    
      −x
      if
      x<0
    
    
      x
      if
      x≥0
    
  

$$f(x)=\{\begin{array}{rll}-x& \text{if}& x<0\\ x& \text{if}& x\ge 0\end{array}$$

English: f of x is equal to; 3 cases, case 1; negative 1 if x; is less than 0; case 2; 0 if x, is equal to 0; case 3; 1 if x, is greater than 0;

system-of-equations

Effect: the table should be read in a style suitable for displayed equations (and inequations)

Applicability: mtable

 intent=':system-of-equations'>
  
    columnalign='right'>
    2⁢x
   
    columnalign='center'>
    =
   
    columnalign='left'>
    1
   
  
  
    columnalign='right'>
    y
   
    columnalign='center'>
    >
   
    columnalign='left'>
    x−3
   
  
 

$$\begin{array}{ccc}\hfill 2x& \hfill =\hfill & 1\hfill \\ \hfill y& \hfill >\hfill & x-3\hfill \end{array}$$

English: 2 equations; equation 1; 2 x, is equal to, 1; equation 2; y, is greater than, x minus 3;

lines

Effect: the table should be read without implying any mathematical context other than a multi-line display

Applicability: mtable

continued-row

Effect: indicates that the row continues an equation wrapped from the row above

Applicability: mtr

by-row

Effect: indicates that the table should be read row by row

Applicability: mtable

by-column

Effect: indicates that the table should be read column by column

Applicability: mtable

equation-label

Effect: indicates that the cell holds an equation label. This may influence the way the surrounding mtr is announced.

Applicability: mtd

no-equation-label

Effect: indicates that the cell does not hold a label. This may be used if a table column is being used solely to hold labels to highlight empty cells for unlabeled rows.

Applicability: mtd

Mathematical category

number-set

Applicability: mi

 intent=":number-set">ℂ

$$ℂ$$

English: complex numbers

English: c

largeop

Applicability: intent function, msub, msubsup munder munderover

sum:largeop(0,n,$arg)

English: the sum from 0 to n of arg

sum:largeop($C,$arg)

English: the sum over C of arg

  intent=":largeop">
  ∑
  0
  n
 
 i2

$$\sum _0^n{i}^2$$

English: the sum from 0 to n of i squared

  intent=":largeop">
  ∑
  i=0
  n
 
 i2

$$\sum _{i=0}^n{i}^2$$

English: the sum from i equals 0 to n of i squared

English: the sum as i goes from 0 to n of i squared

  intent=":largeop">
  ∑
  i∈I
 
 i2

$$\sum _{i\in I}{i}^2$$

English: the sum over i in cap i of i squared

 intent="sum:largeop($from,$to,$exp)">
 
  ∑
   arg="from">0
   arg="to">n
 
  arg="exp">i2

$$\sum _0^n{i}^2$$

English: the sum from 0 to n of i squared

Units and currency

unit

Applicability: mi

Comment: This includes SI units, English units, etc. It also includes radians, degrees, etc.

1.5 intent=':unit'>km

$$1.5\mathrm{km}$$

English: 1.5 kilometres

2 mathvariant='normal' intent=':unit'>Ω

$$2\mathrm{\Omega }$$

English: 2 ohms

currency

Applicability: mi

 mathvariant='normal' intent=':currency'>$1.50

$$\mathrm{\$}1.50$$

English: 1.50 dollars

1.50 intent=':currency'>USD

$$1.50\mathrm{USD}$$

English: 1.50 U S dollars

 mathvariant='normal' intent=':currency'>£1.50

$$\mathrm{\pounds }1.50$$

English: 1.50 pounds

Number

roman-numeral

Applicability: mn

Comment: some braille codes (e.g., CMU) have special rules for roman numerals

 intent=':roman-numeral'>cd

$$\mathrm{cd}$$

English: -c d - four hundred

 intent=':roman-numeral'>XVI

$$\mathrm{XVI}$$

English: x v i

English: sixteen

 intent=':roman-numeral'>  notation='top'> notation='top'>VI  notation='top'>XL DXXI 

$$\overline{\overline{\mathrm{VI}}}\overline{\mathrm{XL}}\mathrm{DXXI}$$

English: v i double vinculm ; x l vinculum ; d x x i

English: six million? ; forty thousand ; five hundred and twenty one

Geometry

shape

Applicability: mo

Comment: there are many shape characters in unicode, including filled and shaded ones. Some have mathematical meaning. The shape property is used when they are meant to be used as a geometric shape.

 intent=':shape'>▭ABCD

$$▭ABCD$$

English: rectangle A B C D

Chemistry

chemical-element

 intent=':chemical-formula'>   mathvariant='normal' intent=':chemical-element'>H 2    mathvariant='normal' intent=':chemical-element'>O 

$$\mathrm{H}_2^{}\mathrm{O}$$

English: cap h 2 cap o

chemical-equation

Effect: read the term as a chemical equation

 intent=':chemical-equation'>
  intent=':chemical-equation'>
  2
  ⁢
   intent=':chemical-equation'>
    intent=':chemical-formula'>
     mathvariant='normal' intent=':chemical-element'>H
    2
    
   
   ⁣
    mathvariant='normal' intent=':chemical-element'>O
  
 
 ⟶
  intent=':chemical-equation'>
   intent=':chemical-equation'>
   2
   ⁢
    intent=':chemical-formula'>
     mathvariant='normal' intent=':chemical-element'>H
    2
    
   
  
  +
   intent=':chemical-formula'>
    mathvariant='normal' intent=':chemical-element'>O
   2
   
  
 

$$2\mathrm{H}_2^{}\mathrm{O}⟶2\mathrm{H}_2^{}+\mathrm{O}_2^{}$$

English: 2, cap h, sub 2; cap o; reacts to form; 2 cap h, sub 2; plus cap o, sub 2

Pause

pause-short

Effect: short pause before processing the element as usual.

Applicability: all