Most of the time a block of code is empty when a piece of code is really missing. So such empty block must be either filled or removed.
Noncompliant Code Example
IF A = 0. " Noncompliant
ELSEIF A > 1. " Noncompliant
ELSE. " Noncompliant
ENDIF.
Exceptions
When a block contains a comment, this block is not considered to be empty.