Added note to split expression

diff --git a/doc/sphinx/arm/classify.rst b/doc/sphinx/arm/classify.rst
index 04cc95c611ec686b7c6522b6849539a4ed42787f..b5337821cbc9f0c8df20a16bc3b49017962abe5f 100644 (file)
--- a/doc/sphinx/arm/classify.rst
+++ b/doc/sphinx/arm/classify.rst
@@ -631,6 +631,12 @@ fields, the result will be an empty string. Some examples follow:
            split ('one.two..four', '.', 4) == 'four'
            split ('one.two..four', '.', 5) == ''
 
+.. note::
+
+   To use hard to escape character as a delimiter, you can use its ASCI value.
+   For example you can split by ``single quote`` using ``0x27``:
+   ``split(option[39].text, 0x27, 1)``
+
 Ifelse
 ------