Use the HELP command to get help on SQL*Plus commands, SQL commands, PL/SQL statements, and other topics. HELP is described in Chapter 2.
HELP [topic
]
where:
May not be abbreviated.
Is the help topic you want to read about. Most SQL commands, SQL*Plus commands and PL/SQL statements are valid help topics. There are others as well. Entering HELP MENU will get you a complete list of valid topics.