Demo Tools

• add_demo — Add an entry in the demos list
• demo_begin — begin a demonstration
• demo_choose — create a dialog box for the choice of options
• demo_compiler — test the presence of a compiler
• demo_end — completes a demonstration
• demo_file_choice — choose and executes an item within a list
• demo_function_choice — choose and execute an item within a list
• demo_run — script file execution