`<md>`

Display math with multiple aligned rows

<md> is a Display Math component that renders a block of aligned display mathematics when used in combination with the <mrow> component.

Attributes and Properties

Attributes for `<md>`

Positioning (2)

anchor

point. Default value: $\left( 0, 0 \right)$. Coordinates of the anchor point used to position this component on a graph.

positionFromAnchor

keyword. Where this component sits relative to its anchor point.

Value	Description
`upperRight`	Place the component above and to the right of the anchor point.
`upperLeft`	Place the component above and to the left of the anchor point.
`lowerRight`	Place the component below and to the right of the anchor point.
`lowerLeft`	Place the component below and to the left of the anchor point.
`top`	Place the component directly above the anchor point.
`bottom`	Place the component directly below the anchor point.
`left`	Place the component directly to the left of the anchor point.
`right`	Place the component directly to the right of the anchor point.
`center` (default)	Center the component on the anchor point.

Other (2)

draggable

boolean. Default value: true. Whether the math display can be dragged on a graph.

layer

number. Default value: 0. Z-order layer index when shown on a graph.

Common to all components (9)

copy

reference. Create an independent copy of another component by reference. Enter a references a $name.

disabled

boolean. Default value: false. Whether this component is disabled and cannot be interacted with.

extend

reference. Extend another component by reference, inheriting its children and attributes. Enter a reference as $name.

fixed

boolean. Default value: false. Whether this component's value is fixed and cannot be modified.

fixLocation

boolean. Default value: false. Whether this component's location is fixed (preventing it from being moved while still allowing other modifications).

hide

boolean. Default value: false. Whether to hide this component from the rendered output.

isResponse

boolean. Default value: false. Whether this component is treated as a response for the purposes of assessment.

name

text. The name used to reference this component from elsewhere in the document.

styleNumber

integer. Default value: 1. The style number used to select this component's visual styling from the available style definitions.

Properties for `<md name="m">`

Positioning (2)

$m.anchor

point. The coordinates where this component is anchored on the graph.

$m.positionFromAnchor

text. Where this component sits relative to its anchor point.

Other (11)

$m.backgroundColor

text. Human-readable name for this component's background color, derived from the active style and theme.

$m.disabled

boolean. Whether this component is disabled and cannot be interacted with.

$m.draggable

boolean. Whether the math display can be dragged on a graph.

$m.fixed

boolean. Whether this component's value is fixed and cannot be modified.

$m.fixLocation

boolean. Whether this component's location is fixed (preventing it from being moved while still allowing other modifications).

$m.hidden

boolean. Whether this component is hidden from the rendered output.

$m.latex

latex. The math content rendered as a LaTeX string.

$m.layer

number. Z-order layer index when shown on a graph.

$m.text

text. The math content rendered as a plain text string.

$m.textColor

text. Human-readable name for this component's text color, derived from the active style and theme.

$m.textStyleDescription

text. Human-readable description of this component's text styling (color and any background color).

Common to all components (4)

$m.doenetML

text. The DoenetML source code that produced this component.

$m.hide

boolean. Whether to hide this component from the rendered output.

$m.isResponse

boolean. Whether this component is treated as a response for the purposes of assessment.

$m.styleNumber

integer. The style number used to select this component's visual styling from the available style definitions.

Examples

Example: `<md>` with nested `<mrow>` children

The data contained within an <md> block must be contained in an <mrow>. Equations and content will align vertically where the & symbol is entered in each row.

Example: `<md>` cannot contain `<answer>` or `<mathInput/>`

An <md> block cannot contain an <answer> or a <mathInput/>.

Example: `<md>` with referenced `<math>`

Computational DoenetML components, such as <math>, or <derivative>, can be nested within or referenced within an <md> block.

Exceptions: The <answer> component, the <mathInput/> component, and other <md> components cannot be nested within an <md> block.

Example: `<md>` on a `<graph>`

An <md> block can be placed on a <graph>. The anchor attribute can be used to specify its initial location.

Attribute Examples

Attribute Example: Standard graphical attributes

Since an <md> block can be placed on a graph, the standard graphical attributes draggable, hide, and styleNumber can be used to control its appearance and behavior.

Property Examples

Property Example: latex

The latex property returns the LaTeX code for rendering the equation block.

Property Example: text

The text property returns the text value of the equation block.

max mdash

<md>