makes a data set current for output
The SETOUT statement chooses the specified data set from among those data sets already opened for output by the EDIT or CREATE statement. This data set becomes the current output data set for subsequent data management statements. If specified, the NOBS option returns the number of observations currently in the data set in the scalar variable name. The POINT option makes the specified observation the current one.
In the example that follows, the data set WORK.A is made the current output data set and the fifth observation is made the current observation. The number of observations in WORK.A is returned in the variable SIZE.
setout work.a nobs size point 5;