<hazardsymbol>

Usage information

When a <hazardsymbol> element is directly contained by <messagepanel>, the <hazardsymbol> is assumed to be associated with the <typeofhazard> element. Otherwise, the image is associated with the containing element.

Rendering expectations

Specialization hierarchy

The <hazardsymbol> element is specialized from <image>. It is defined in the hazard-statement domain module.

Content model

<alt> ?, <longdescref> ?

Attributes

The following attributes are available on this element: universal attributes, @format, @href, @keyref, @scope, and the attributes defined below.

@align

Specifies the horizontal alignment of an image when placement is specified as break. Common values include left, right, and center.

@height

Specifies the vertical dimension for the resulting display. The value of this attribute is a real number expressed in decimal notation, optionally followed by a unit of measure. The following units of measurement are supported: cm, em, in, mm, pc, pt, and px (centimeters, ems, inches, millimeters, picas, points, and pixels, respectively). The default unit is px (pixels). Possible values include:5, 5in, and 10.5cm.

@placement

Specifies whether an image is displayed inline or on a separate line. The default value is inline. Allowable values are: inline, break, and -dita-use-conref-target.

@scale

Specifies a percentage as an unsigned integer by which to scale the image in the absence of any specified image height or width; a value of 100 implies that the image should be presented at its intrinsic size. If a value has been specified for the @height or @width attribute (or both), the @scale attribute is ignored.

It is an error if the value of this attribute is not an unsigned integer. In this case, the implementation might give an error message and might recover by ignoring this attribute.

@scalefit

Specifies whether an image is scaled up or down to fit within available space. Allowable values are yes, no, and -dita-use-conref-target. For a given image, if any one of @height, @width, or @scale is specified, those attributes determine the graphic size and any setting of @scalefit is ignored. If none of those attributes are specified and scalefit="yes", then the image is scaled by the same factor in both dimensions, so that the graphic will just fit within the available height or width (whichever is more constraining).

The available width would be the prevailing column (or table cell) width—that is, the width a paragraph of text would have if the graphic were a paragraph instead. The available height is implementation dependent, but if feasible, it is suggested to be the page (or table cell) height or some other reasonable value.

@width

Specifies the horizontal dimension for the resulting display. The value of this attribute is a real number expressed in decimal notation, optionally followed by a unit of measure. The following units of measurement are supported: cm, em, in, mm, pc, pt, and px (centimeters, ems, inches, millimeters, picas, points, and pixels, respectively). The default unit is px (pixels). Possible values include:5, 5in, and 10.5cm.

For this element, @href specifies an image.

The following attributes are available on this element: universal attributes and the attributes defined below.

@align

Specifies the horizontal alignment of an image when placement is specified as break. Common values include left, right, and center.

@format (link-relationship attributes)

Specifies the format of the resource that is referenced. See The format attribute for detailed information on supported values and processing implications.

@height

Specifies the vertical dimension for the resulting display. The value of this attribute is a real number expressed in decimal notation, optionally followed by a unit of measure. The following units of measurement are supported: cm, em, in, mm, pc, pt, and px (centimeters, ems, inches, millimeters, picas, points, and pixels, respectively). The default unit is px (pixels). Possible values include:5, 5in, and 10.5cm.

@href (link-relationship attributes)

Specifies a reference to a resource. See The href attribute for detailed information on supported values and processing implications.

For this element, @href specifies an image.

@keyref

Specifies a key name that acts as a redirectable reference based on a key definition within a map. See The keyref attribute for information on using this attribute.

For HDITA, the equivalent of @keyref is @data-keyref

@placement

Specifies whether an image is displayed inline or on a separate line. The default value is inline. Allowable values are: inline, break, and -dita-use-conref-target.

@scale

Specifies a percentage as an unsigned integer by which to scale the image in the absence of any specified image height or width; a value of 100 implies that the image should be presented at its intrinsic size. If a value has been specified for the @height or @width attribute (or both), the @scale attribute is ignored.

It is an error if the value of this attribute is not an unsigned integer. In this case, the implementation might give an error message and might recover by ignoring this attribute.

@scalefit

Specifies whether an image is scaled up or down to fit within available space. Allowable values are yes, no, and -dita-use-conref-target. For a given image, if any one of @height, @width, or @scale is specified, those attributes determine the graphic size and any setting of @scalefit is ignored. If none of those attributes are specified and scalefit="yes", then the image is scaled by the same factor in both dimensions, so that the graphic will just fit within the available height or width (whichever is more constraining).

The available width would be the prevailing column (or table cell) width—that is, the width a paragraph of text would have if the graphic were a paragraph instead. The available height is implementation dependent, but if feasible, it is suggested to be the page (or table cell) height or some other reasonable value.

@scope (link-relationship attributes)

Specifies the closeness of the relationship between the current document and the referenced resource. The following values are valid: local, peer, external, and -dita-use-conref-target.

See The scope attribute for detailed information on supported values and processing implications.

@width

Specifies the horizontal dimension for the resulting display. The value of this attribute is a real number expressed in decimal notation, optionally followed by a unit of measure. The following units of measurement are supported: cm, em, in, mm, pc, pt, and px (centimeters, ems, inches, millimeters, picas, points, and pixels, respectively). The default unit is px (pixels). Possible values include:5, 5in, and 10.5cm.