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Libname  <libref>  <path>;

Libref maximum 8 characters; letters, underscore or numbers; cannot start with numbers; no special characters.


It is helpful to start a programme with a path macro:  %let path=<folder path>;

To invoke the macro: libname <libref> "&path";

A macro will only be recognised if placed within double quotes 


To change a libref: libname <libref> clear;