File Definition Commands
You can use most of the file definition commands in the initial
state, the transformation state, and the procedure state. Most of
these commands cause errors if you try to use them in the input program
state. However, DATA LIST and KEYED DATA LIST can be and often are used
in input programs.
After they are used in the initial state, most file
definition commands move the program directly to the transformation
state, since these commands are the entire input program.
FILE TYPE and INPUT
PROGRAM move the program into the input program state
and require input program commands to complete the input program.
Commands in the table Table 1 marked with a
dagger (†) clear the active dataset.