+Any "options" specified for a protocol decoder which are not actually
+supported options, will be interpreted as being probe name/number assignments.
+.sp
+Example:
+.sp
+ $
+.B "sigrok\-cli \-i <file.sr>"
+.br
+.B " \-P spi:wordsize=9:miso=1:mosi=5:sck=3:cs=0"
+.sp
+In this example,
+.B wordsize
+is an option supported by the
+.B spi
+protocol decoder. Additionally, the user tells sigrok to decode the SPI
+protocol using probe 1 as MISO signal for SPI, probe 5 as MOSI, probe 3
+as SCK, and probe 0 as CS# signal.
+.TP
+.BR "\-S, \-\-protocol\-decoder\-stack " <stack>
+This option allows the user to specify a protocol decoder stack, i.e.
+the way in which one protocol decoder's output gets piped into another
+protocol decoder. If not specified, the stack will be set up in the same
+order in which the protocol decoders were given with the
+.B \-\-protocol-decoders
+option.
+.sp
+The decoders are specified by their ID, as shown in the
+.B \-\-version
+output. In addition to the
+.B \-S
+option, all protocol decoders that are used in a stack, must also be specified
+(together with their options, if any) using the
+.B \-A
+parameter.
+.sp
+Example:
+.sp
+ $
+.B "sigrok\-cli \-i <file.sr> \-A i2c:sda=4:scl=7,rtc8564"
+.br
+.B " \-S i2c,rtc8564"
+.sp
+In this example, the
+.B \-S
+option specifies that the output of the
+.BR i2c " decoder"
+is piped into the
+.BR rtc8564 " decoder,"
+i.e., the
+.BR rtc8564 " decoder"
+is stacked on top of the
+.BR i2c " decoder."
+.sp
+The respective protocol decoder options and probe name/number assignments
+must be given using the
+.B \-P
+option (you cannot specify them in the
+.B \-S
+option).
+.TP
+.BR "\-A, \-\-protocol\-decoder\-annotations " <annotations>
+By default, only the stack's topmost protocol decoder's annotation output is
+shown. With this option another decoder's annotation can be selected for
+display, by specifying its ID:
+.sp
+ $
+.B "sigrok\-cli \-i <file.sr> \-P i2c,i2cfilter,edid -A i2c"
+.sp
+If a protocol decoder has multiple annotations, you can also specify
+which one of them to show by specifying its short description like this:
+.sp
+ $
+.B "sigrok\-cli \-i <file.sr> \-P i2c,i2cfilter,edid"
+.br
+.B " \-A i2c=data-read"
+.sp
+Select multiple annotations by separating them with a colon:
+.sp
+ $
+.B "sigrok\-cli \-i <file.sr> \-P i2c,i2cfilter,edid"
+.br
+.B " \-A i2c=data-read:data-write"
+.sp
+You can also select multiple protocol decoders, with an optional selected
+annotation each, by separating them with commas: