In an Annotate data set, the value
of the FUNCTION variable specifies what action the observation performs.
Annotate functions act in conjunction with Annotate variables that
determine where and how to perform the action. Many of these variables
are function-dependent, that is, what they do depends on the function
that they are used with. For example, with the LABEL function the
STYLE variable specifies a font; with the BAR function, STYLE specifies
a pattern.
This section describes
all of the values of the FUNCTION variable. For each function it
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describes the function's action.
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notes whether the function updates
the internal coordinate variables XLAST, YLAST and XLSTT, YLSTT.
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describes how other Annotate variables
behave with the function. For a complete description of each variable,
see
About the Annotate Variables