XFA Specification
Chapter 23, FormCalc Specification
String Built-in Functions
880
Lower()
This function returns a string where all given uppercase characters are converted to lowercase.
Syntax
Lower(s1[, k1])
Parameters
s1
is the string to be converted.
k1
is a locale identifier string, as described in
“Specifying a Locale (Locale Identifier String)” on page 828.
If k1 is omitted, the
prevailing locale
Returns
The lowercased string or null if any of its mandatory parameters are null.
In some locales, there are alphabetic characters that do not have an lowercase equivalent.
Bugs
The current implementation limits the operation of this function to the Latin1 subrange of the Unicode 2.1
character set. Characters outside this subrange are never converted.
Examples
Lower("Abc123X")
returns "abc123x".
Lower("ÀBÇDÉ")
returns "àbçdé".