RosettaCodeData/Task/Introspection/REXX/introspection-4.rexx

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if symbol('bloop')=='VAR'  then say 'the "bloop" variable exists.'
                           else say 'the "bloop" variable doesn''t exist.'
	`if symbol('bloop')=='VAR' then say 'the "bloop" variable exists.'`
	`else say 'the "bloop" variable doesn''t exist.'`