Type the name of one of the categories listed below to obtain a list
  of related commands and topics.  To obtain detailed information on a
  topic, press the RETURN key until you reach the "Topic?" prompt and then
  type the name of the topic.

  Topics that appear in all uppercase are DCL commands.

  Additional Information (explode) :

• Batch and print jobs
• Command procedures
• Contacting people
• Creating processes
• Developing programs
• Executing programs
• Files and directories
• Logical names
• Operators in expressions
• Physical devices
• Security
• System management
• Terminal environment
• User environment