Language Reference Guide : Preprocessing Your 4GL Code : Error Processing : Example--Error Processing
 
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Example--Error Processing
The following code fragment is an example of using macro variables in code:
# define $_curfld 'enterfield'
# if '$_curfld' = 'enterfield' then
# else
# endif

# ifndef $_curfld
# else
# endif

# include 'entryapplication'