Hi -   I am a long time SAS user but there are still some things I don't understand. When using nobs to count observations, as in    data _NULL_;  if 0 then set sashelp.cars nobs=n; put "no. of observations =" n;  stop; run;   why is the syntax "nobs = n" instead of "n = nobs"? Any other time we want to create a new variable, we put the name of the variable on the left of the equal sign and the value on the right. Here it's the opposite. Can someone explain this to me? ... View more