+mechanism in section 4.18 of SBC-3 revision 6 (see www.t10.org ).
+
+.I scttemp, scttempsts, scttemphist
+\- [ATA only] prints the disk temperature information provided by the
+SMART Command Transport (SCT) commands.
+The option \'scttempsts\' prints current temperature and temperature
+ranges returned by the SCT Status command, \'scttemphist\' prints
+temperature limits and the temperature history table returned by
+the SCT Data Table command, and \'scttemp\' prints both.
+The temperature values are preserved across power cycles.
+The logging interval can be configured with the
+\'\-l scttempint,N[,p]\' option, see below.
+The SCT commands were introduced in ATA8-ACS and were also
+supported by many ATA-7 disks.
+
+.I scttempint,N[,p]
+\- [ATA only] clears the SCT temperature history table and sets the
+time interval for temperature logging to N minutes.
+If \',p\' is specified, the setting is preserved across power cycles.
+Otherwise, the setting is volatile and will be reverted to the last
+non-volatile setting by the next hard reset. The default interval
+is vendor specific, typical values are 1, 2, or 5 minutes.
+
+.I scterc[,READTIME,WRITETIME]
+\- [ATA only] prints values and descriptions of the SCT Error Recovery
+Control settings. These are equivalent to TLER (as used by Western
+Digital), CCTL (as used by Samsung and Hitachi/HGST) and ERC (as used by
+Seagate). READTIME and WRITETIME arguments (deciseconds) set the
+specified values. Values of 0 disable the feature, other values less
+than 65 are probably not supported. For RAID configurations, this is
+typically set to 70,70 deciseconds.
+
+.I devstat[,PAGE]
+\- [ATA only] prints values and descriptions of the ATA Device Statistics
+log pages (General Purpose Log address 0x04). If no PAGE number is specified,
+entries from all supported pages are printed. If PAGE 0 is specified,
+the list of supported pages is printed. Device Statistics was
+introduced in ACS-2 and is only supported by some recent devices.
+
+.I sataphy[,reset]
+\- [SATA only] prints values and descriptions of the SATA Phy Event
+Counters (General Purpose Log address 0x11). If \'\-l sataphy,reset\'
+is specified, all counters are reset after reading the values.
+This also works for SATA devices with Packet interface like CD/DVD
+drives.
+
+.I sasphy[,reset]
+\- [SAS (SCSI) only] prints values and descriptions of the SAS (SSP)
+Protocol Specific log page (log page 0x18). If \'\-l sasphy,reset\'
+is specified, all counters are reset after reading the values.
+
+.I gplog,ADDR[,FIRST[\-LAST|+SIZE]]
+\- [ATA only] prints a hex dump of any log accessible via General
+Purpose Logging (GPL) feature. The log address ADDR is the hex address
+listed in the log directory (see \'\-l directory\' above).
+The range of log sectors (pages) can be specified by decimal values
+FIRST\-LAST or FIRST+SIZE. FIRST defaults to 0, SIZE defaults to 1.
+LAST can be set to \'max\' to specify the last page of the log.
+
+.I smartlog,ADDR[,FIRST[\-LAST|+SIZE]]
+\- [ATA only] prints a hex dump of any log accessible via SMART Read
+Log command. See \'\-l gplog,...\' above for parameter syntax.
+
+For example, all these commands:
+.nf
+ smartctl \-l gplog,0x80,10-15 /dev/sda
+ smartctl \-l gplog,0x80,10+6 /dev/sda
+ smartctl \-l smartlog,0x80,10-15 /dev/sda
+.fi
+print pages 10-15 of log 0x80 (first host vendor specific log).