Name
screenco — A screen with associated areas used in callouts
Synopsis
screenco ::=
(info
? db.titleforbidden.info,
areaspec
, screen
,
calloutlist
*)
Attribute synopsis
Description
The callout
s, such as numbered bullets, are an
annotation mechanism. In an online system, these bullets are frequently
“hot,” and clicking on them navigates to the corresponding
annotation.
A screenco
is a wrapper around an
areaspec
and a screen
. An
areaspec
identifies the locations (coordinates) in
the screen
where the callouts occur. The
screenco
may also contain the list of annotations in
a calloutlist
, although the
calloutlist
may also occur outside of the wrapper,
elsewhere in the document.
It is also possible to embed co
elements
directly in the verbatim text, in order to avoid the overhead of
calculating the correct coordinates. If you decide to follow this route,
use a screen
and a calloutlist
without the screenco
wrapper. A
screenco
must specify at least one coordinate.
For a complete description of callouts, see
callout
.
Processing expectations
Formatted as a displayed block. This element is displayed “verbatim”; whitespace and line breaks within this element are significant.
The mandatory processing expectations of a
screenco
are minimal: a system is expected to
render the program listing and the callout list, if present.
If explicit co
elements are embedded in a
screen
, they must generate appropriate callout
marks.
In online environments, the processing system ...
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