SAS dataset options

It has been told that some SAS PROC PRINT options--for example, (obs=10 firstobs=5)--can be used, say, in this article. However, I checked for a while in the document of proc print, I did not find any stuff about this kind of options. But it is sas datasets options, just like below example:

data a (keep=b); a=4; b=3; run;