Documentation: Add missing tags to placeholders

@table @option

@item -g WxH[xDEPTH]

@item -g @var{W}x@var{H}[x@var{DEPTH}]

Set the initial VGA graphic mode. The default is 800x600x15.

@item -prom-env string

@item -prom-env @var{string}

Set OpenBIOS variables in NVRAM, for example:

@table @option

@item -g WxHx[xDEPTH]

@item -g @var{W}x@var{H}x[x@var{DEPTH}]

Set the initial TCX graphic mode. The default is 1024x768x8, currently

the only other possible mode is 1024x768x24.

@item -prom-env string

@item -prom-env @var{string}

Set OpenBIOS variables in NVRAM, for example:

@table @option

@item -prom-env string

@item -prom-env @var{string}

Set OpenBIOS variables in NVRAM, for example:

    "-mtdblock file  use 'file' as on-board Flash memory image\n")

STEXI

@item -mtdblock file

Use 'file' as on-board Flash memory image.

@item -mtdblock @var{file}

Use @var{file} as on-board Flash memory image.

ETEXI

DEF("sd", HAS_ARG, QEMU_OPTION_sd,

    "-sd file        use 'file' as SecureDigital card image\n")

STEXI

@item -sd file

Use 'file' as SecureDigital card image.

@item -sd @var{file}

Use @var{file} as SecureDigital card image.

ETEXI

DEF("pflash", HAS_ARG, QEMU_OPTION_pflash,

    "-pflash file    use 'file' as a parallel flash image\n")

STEXI

@item -pflash file

Use 'file' as a parallel flash image.

@item -pflash @var{file}

Use @var{file} as a parallel flash image.

ETEXI

DEF("boot", HAS_ARG, QEMU_OPTION_boot,

means qemu is able to report the mouse position without having to grab the

mouse. Also overrides the PS/2 mouse emulation when activated.

@item disk:[format=@var{format}]:file

@item disk:[format=@var{format}]:@var{file}

Mass storage device based on file. The optional @var{format} argument

will be used rather than detecting the format. Can be used to specifiy

format=raw to avoid interpreting an untrusted format header.

@code{format=raw} to avoid interpreting an untrusted format header.

@item host:bus.addr

Pass through the host device identified by bus.addr (Linux only).

@item host:@var{bus}.@var{addr}

Pass through the host device identified by @var{bus}.@var{addr} (Linux only).

@item host:vendor_id:product_id

Pass through the host device identified by vendor_id:product_id (Linux only).

@item host:@var{vendor_id}:@var{product_id}

Pass through the host device identified by @var{vendor_id}:@var{product_id}

(Linux only).

@item serial:[vendorid=@var{vendor_id}][,productid=@var{product_id}]:@var{dev}

Serial converter to host character device @var{dev}, see @code{-serial} for the

Braille device.  This will use BrlAPI to display the braille output on a real

or fake device.

@item net:options

@item net:@var{options}

Network adapter that supports CDC ethernet and RNDIS protocols.

@end table

By convention the TCP port is 5900+@var{d}. Optionally, @var{host} can

be omitted in which case the server will accept connections from any host.

@item @code{unix}:@var{path}

@item unix:@var{path}

Connections will be allowed over UNIX domain sockets where @var{path} is the

location of a unix socket to listen for connections on.

Require that client use TLS when communicating with the VNC server. This

uses anonymous TLS credentials so is susceptible to a man-in-the-middle

attack. It is recommended that this option be combined with either the

@var{x509} or @var{x509verify} options.

@option{x509} or @option{x509verify} options.

@item x509=@var{/path/to/certificate/dir}

Available character devices are:

@table @option

@item vc[:WxH]

@item vc[:@var{W}x@var{H}]

Virtual console. Optionally, a width and height can be given in pixel with

@example

vc:800x600

    "                enable virtual instruction counter with 2^N clock ticks per\n" \

    "                instruction\n")

STEXI

@item -icount [N|auto]

@item -icount [@var{N}|auto]

Enable virtual instruction counter.  The virtual cpu will execute one

instruction every 2^N ns of virtual time.  If @code{auto} is specified

instruction every 2^@var{N} ns of virtual time.  If @code{auto} is specified

then the virtual cpu speed will be automatically adjusted to keep virtual

time within a few seconds of real time.

    "-echr chr       set terminal escape character instead of ctrl-a\n")

STEXI

@item -echr numeric_ascii_value

@item -echr @var{numeric_ascii_value}

Change the escape character used for switching to the monitor when using

monitor and serial sharing.  The default is @code{0x01} when using the

@code{-nographic} option.  @code{0x01} is equal to pressing

    "-chroot dir     Chroot to dir just before starting the VM.\n")

#endif

STEXI

@item -chroot dir

@item -chroot @var{dir}

Immediately before starting guest execution, chroot to the specified

directory.  Especially useful in combination with -runas.

ETEXI

    "-runas user     Change to user id user just before starting the VM.\n")

#endif

STEXI

@item -runas user

@item -runas @var{user}

Immediately before starting guest execution, drop root privileges, switching

to the specified user.

ETEXI