Syntax: Help [name]
Abbreviation: H
displays some help about the command name (both the short and the long versions of the command names are accepted). If no argument is given, a list of all existing commands in long form is displayed, allowing you to choose one. You can browse the help text with the standard navigation keys. If you press Return, the command list will be displayed again. If you press f1 or Escape, you will return to normal editing.
Invocations of the Help command are never registered while
recording macros so that you can safely access the help system while
recording. See Record.