Enter the RUN command. At this point, you cannot use immediate mode statements. Normally, the currently compiled program is the one you read into memory with the OLD command. In the previous example, MAIN is the currently compiled module. For more information about loading multiple object modules, see Section 2.4 .
Many statements are executable in immediate mode.
Immediate mode statements cannot be preceded by a line number, space, or tab and can be used only if you are working directly in the Environment. This line does not execute until a RUN command is specified. The third line does not begin with a line number, a space, or an exclamation point. Even if the current program executes a STOP statement, you can perform independent calculations. However, after a stop, any immediate mode statement referencing program variables uses the values assigned in the program.