Postgresql - How to list the Postgresql slash commands

Question: How do I list the Postgres slash commands, i.e., the commands available from the Postgres command line?

Once you're logged into a Postgresql database, you can issue the \? command to see the list of available Postgres "slash" commands, like this:

mydatabase=> \?

For my own convenience, I'm listing these Postgres commands here. These are the commands available in the Postgresql 8.0.3 client:

First, I issue the call for Postgres command line help:

mydatabase=> \?

And here is the Postgres help:

  \c[onnect] [DBNAME|- [USER]]
                 connect to new database (currently "pizzastore")
  \cd [DIR]      change the current working directory
  \copyright     show PostgreSQL usage and distribution terms
  \encoding [ENCODING]
                 show or set client encoding
  \h [NAME]      help on syntax of SQL commands, * for all commands
  \q             quit psql
  \set [NAME [VALUE]]
                 set internal variable, or list all if no parameters
  \timing        toggle timing of commands (currently off)
  \unset NAME    unset (delete) internal variable
  \! [COMMAND]   execute command in shell or start interactive shell

Query Buffer
  \e [FILE]      edit the query buffer (or file) with external editor
  \g [FILE]      send query buffer to server (and results to file or |pipe)
  \p             show the contents of the query buffer
  \r             reset (clear) the query buffer
  \s [FILE]      display history or save it to file
  \w FILE        write query buffer to file

  \echo [STRING] write string to standard output
  \i FILE        execute commands from file
  \o [FILE]      send all query results to file or |pipe
  \qecho [STRING]
                 write string to query output stream (see \o)

  \d [NAME]      describe table, index, sequence, or view
  \d{t|i|s|v|S} [PATTERN] (add "+" for more detail)
                 list tables/indexes/sequences/views/system tables
  \da [PATTERN]  list aggregate functions
  \db [PATTERN]  list tablespaces (add "+" for more detail)
  \dc [PATTERN]  list conversions
  \dC            list casts
  \dd [PATTERN]  show comment for object
  \dD [PATTERN]  list domains
  \df [PATTERN]  list functions (add "+" for more detail)
  \dg [PATTERN]  list groups
  \dn [PATTERN]  list schemas (add "+" for more detail)
  \do [NAME]     list operators
  \dl            list large objects, same as \lo_list
  \dp [PATTERN]  list table, view, and sequence access privileges
  \dT [PATTERN]  list data types (add "+" for more detail)
  \du [PATTERN]  list users
  \l             list all databases (add "+" for more detail)
  \z [PATTERN]   list table, view, and sequence access privileges (same as \dp)

  \a             toggle between unaligned and aligned output mode
  \C [STRING]    set table title, or unset if none
  \f [STRING]    show or set field separator for unaligned query output
  \H             toggle HTML output mode (currently off)
  \pset NAME [VALUE]
                 set table output option
                 (NAME := {format|border|expanded|fieldsep|footer|null|
  \t             show only rows (currently off)
  \T [STRING]    set HTML <table> tag attributes, or unset if none
  \x             toggle expanded output (currently off)

Copy, Large Object
  \copy ...      perform SQL COPY with data stream to the client host
  \lo_export LOBOID FILE
  \lo_import FILE [COMMENT]
  \lo_unlink LOBOID    large object operations

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