+\fB2\fP Warnings
+.br
+\fB3\fP Informational
+.br
+\fB4\fP Debug
+.br
+\fB5\fP Spew
+.TP
+.B "\-\-show"
+.br
+Show information about the selected option. For example, to see options for a
+connected fx2lafw device:
+.sp
+ $
+.B "sigrok\-cli \-\-driver fx2lafw \-\-show
+.sp
+In order to properly get device options for your hardware, some drivers might
+need a serial port specified:
+.sp
+ $
+.B "sigrok\-cli \-\-driver ols:conn=/dev/ttyACM0 \-\-show
+.sp
+To view the documentation for a protocol decoder:
+.sp
+ $
+.B "sigrok\-cli \-\-protocol-decoders i2c \-\-show
+.TP
+.B "\-\-scan"
+Scan for devices that can be detected automatically.
+.sp
+Example:
+.sp
+ $
+.B "sigrok\-cli \-\-scan
+.br
+ The following devices were found:
+.br
+ Demo device with 8 probes: 0 1 2 3 4 5 6 7
+.br
+ ChronoVu LA8 with 8 probes: 0 1 2 3 4 5 6 7
+.br
+ ALSA: HDA ATI SB ALC270 Analog with 2 probes: Ch_0 Ch_1
+.br
+ Saleae Logic with 8 probes: 0 1 2 3 4 5 6 7
+.sp
+However, not all devices are auto-detectable (e.g. serial port based ones).
+For those you'll have to provide a \fBconn\fP option, see above.
+.sp
+ $
+.B "sigrok\-cli \-\-driver digitek-dt4000zc:conn=/dev/ttyUSB0 \-\-scan
+.br
+ The following devices were found:
+.br
+ Digitek DT4000ZC with 1 probe: P1