specifies a character
constant, variable, or expression that evaluates to a variable name.
Restriction
The value of the specified expression cannot denote an
array reference.
Details
If the VLABELX function
returns a value to a variable that has not yet been assigned a length,
by default the variable is assigned a length of 200.
If there is no label,
VLABELX returns the variable name.
Comparisons
VLABEL returns the label of the
specified variable, or the name of the specified variable if no label
exists. VLABELX, however, evaluates the argument to determine the
variable name. The function then returns the label that is associated
with that variable name, or the variable name if no label exists.
VLABEL does not accept an expression
as an argument. VLABELX accepts expressions, but the value of the
specified expression cannot denote an array reference.
Related functions return the value
of other variable attributes, such as the variable name, informat,
and format, among others. For a list, see the Variable Information
functions in SAS Functions and CALL Routines by Category.