https://communities.sas.com/t5/SAS-Health-and-Life-Sciences/begginer-in-SAS/m-p/65351#M1559 If you mean a data step, and you are using DMS SAS, you could use the data step debugger. You can find intructions how to use it in on-line doc.<BR /> <BR /> Linus Wed, 10 Dec 2008 21:15:11 GMT LinusH 2008-12-10T21:15:11Z https://communities.sas.com/t5/SAS-Health-and-Life-Sciences/begginer-in-SAS/m-p/65350#M1558 I have experience in msaccess and other databases, but i am a beginneer in SAS<BR /> <BR /> Could anyone let me know how to make run a program step by step to track each instruction.<BR /> <BR /> Thanks a lot for your help Wed, 10 Dec 2008 16:53:03 GMT https://communities.sas.com/t5/SAS-Health-and-Life-Sciences/begginer-in-SAS/m-p/65350#M1558 deleted_user 2008-12-10T16:53:03Z https://communities.sas.com/t5/SAS-Health-and-Life-Sciences/begginer-in-SAS/m-p/65351#M1559 If you mean a data step, and you are using DMS SAS, you could use the data step debugger. You can find intructions how to use it in on-line doc.<BR /> <BR /> Linus Wed, 10 Dec 2008 21:15:11 GMT https://communities.sas.com/t5/SAS-Health-and-Life-Sciences/begginer-in-SAS/m-p/65351#M1559 LinusH 2008-12-10T21:15:11Z