A procedure is run by calling it. To call it, a programmer uses the procedure name and includes any parameters (values) that the procedure needs, for example: SUBROUTINE f_TO_c(temperature_in_f) ...

You can use SAS functions in a WHERE expression. Also, note that a DATA or a PROC step attempts to use an available index to optimize the selection of data when an indexed variable is used in ...

specifies the variable that the procedure uses to form BY groups. You can specify more than one variable. If you do not use the NOTSORTED option in the BY statement, the observations in the data set ...

There are two types of subroutine: Procedures perform a specific task but do not return a value. Functions manipulate data and return a value to the main program. A local variable is a variable that ...