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DocBook 5: The Definitive Guide by Richard L. Hamilton, Norman Walsh

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Name

areaspec — A collection of regions in a graphic or code example

Synopsis

areaspec ::= (area db.area | areaset)+

Attribute synopsis

Common attributes and common linking attributes.

Additional attributes:

  • Exactly one of:

    • units (enumeration) = “calspair” | “linecolumn” | “linecolumnpair” | “linerange

    • Each of:

      • units (enumeration) = “other”

      • otherunits (NMTOKEN)

Required attributes are shown in bold.

Description

An areaspec holds a collection of regions and/or region sets in a graphic, program listing, or screen that are associated with callout descriptions. See area for a description of the attributes.

Processing expectations

Suppressed. This element provides data for processing but it is not expected to be rendered directly.

Attributes

Common attributes and common linking attributes.

otherunits

Identifies the units used in the coords attribute when the units attribute is other. This attribute is forbidden otherwise.

units

Identifies the units used in the coords attribute. The default units vary according to the type of callout specified: calspair for graphics and linecolumn for line-oriented elements.

Enumerated values:
“calspair”

Coordinates expressed as a pair of CALS graphic coordinates

“linecolumn”

Coordinates expressed as a line and column

“linecolumnpair”

Coordinates expressed as a pair of lines and columns

“linerange”

Coordinates expressed as a line range

units

Indicates that nonstandard units are used for this area. In this case, otherunits must be specified.

Enumerated values:
“other”

Coordinates expressed ...

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