/** and /* meaning in sap b1

Dear experts,

In my query reports in query manager, one of reports is running from store procedure. to run that store procedure , we have to pass the parameter. But this report is passing the parameter with /** and /*. Report is running correctly. But I want to know meaning of /** and /*. Here is parameter passing query in the report.

/**SELECT FROM [OITM] T0 **/

DECLARE @SerType as varchar(50)

/* WHERE */

Set @SerType = /* T0.U_Service */ '[%0]'