this type style
Italic, monospaced text indicates placeholders for information that you must supply.
{value|value}
Braces and a vertical bar indicate a choice among two or more items. You must choose one of the items unless all of the items are also enclosed in square brackets.
/option or -option
A slash before an option name indicates the option is
available on Windows systems. A dash before an option name indicates the
option is available on Linux systems.
For example:
Windows option: /fast
Linux option: -fast
Note
If an option is available on both Windows and Linux systems, no slash or dash appears in the general description of the option. The slash and dash will only appear where the option syntax is described.
/option:parameter
or -option parameter
Indicates that an option requires a parameter.
For example, you must specify a parameter for option arch:
Windows option: /arch:SSE
Linux option: -arch SSE
/option:keyword
or
-option keyword
Indicates that an option requires one of the keyword values.
/option[:keyword] or
-option [keyword]
Indicates that the option can be used alone or with an optional keyword.
option[n]
Indicates that the option can be used alone or with an optional value; for example, in /unroll[n] or -unroll[n], the n can be omitted or a valid value can be specified.
option[-]
Indicates that a trailing hyphen disables the option; for example, /Qansi_alias- disables the Windows option /Qansi_alias.
[no]option or
[no-]option
Indicates that "no" or "no-" preceding
an option disables the option. For example:
In the Windows option /[no]traceback, /traceback
enables the option, while /notraceback disables
it.
In the Linux option -[no-]ansi-alias, -ansi-alias
enables the option, while -no-ansi-alias disables
it.
In some options, the "no" appears later in the option name; for example:
-fno-alias disables the -falias option.