specifying an invalid data set option. When SAS encounters a syntax error, it first attempts to correct the error by attempting to interpret what you meant, then ...
does not execute most of the subsequent DATA steps or procedures in the program (exceptions include PROC DATASETS and PROC CONTENTS). Note: Any data sets that are created after SAS has entered syntax ...
If you want to use these characters without triggering a function or casuing a syntax error, they need to be escaped. Dollar Sign ($) Used to declare and access variables.