Manual pages: underline device|file mentioned in DESCRIPTION throughput

man8/thin_dump.8

@@ -11,12 +11,18 @@ thin_dump \- dump thin provisioning metadata from device or file to standard out
 .B thin_dump
 dumps binary thin provisioning metadata (optionally from alternate block;
 see option \-\-metadata-snap) created by the device-mapper
-thin provisioning target on a device or file to standard output for
+thin provisioning target on a
+.I device
+or
+.I file
+to standard output for
 analysis or postprocessing in either XML or human readable format.
 XML formated metadata can be fed into thin_restore (see
 .BR thin_restore(8) )
-in order to put it back onto a metadata device (to process by
-the device-mapper target) or file.
+in order to put it back onto a metadata
+.I device
+(to process by the device-mapper target) or
+.I file.
 
 .IP "\fB\-f, \-\-format\fP \fI{xml|human_readable}\fP".
 Print output in XML or human readable format.

man8/thin_repair.8

@@ -13,9 +13,17 @@ thin_repair \- repair thin provisioning binary metadata from device/file to devi
 .SH DESCRIPTION
 .B thin_repair
 reads binary thin provisioning metadata created by the
-respective device-mapper target from one device or file,
-repairs it and writes it to another device or file.
-If written to a metadata device, the metadata can be processed
+respective device-mapper target from one
+.I device
+or
+.I file
+, repairs it and writes it to another
+.I device
+or
+.I file.
+If written to a metadata
+.I device
+, the metadata can be processed
 by the device-mapper target.
 
 .IP "\fB\-i, \-\-input\fP \fI{device|file}\fP"

man8/thin_restore.8

@@ -15,9 +15,14 @@ thin_restore \- restore thin provisioning metadata file to device or file
 restores thin provisioning metadata created by the
 respective device-mapper target dumped into an XML formatted (see
 .BR thin_dump(8) )
-file, which optionally can be preprocessed to another device or file.
-If restored to a metadata device, the metadata can be processed
-by the device-mapper target.
+.I file
+, which optionally can be preprocessed before the restore to another
+.I device
+or
+.I file.
+If restored to a metadata
+.I device
+, the metadata can be processed by the device-mapper target.
 
 .IP "\fB\-i, \-\-input\fP \fI{device|file}\fP"
 Input file or device with metadata.

man8/thin_rmap.8

@@ -9,8 +9,12 @@ thin_rmap \- output reverse map of a thin provisioned region of blocks from meta
 
 .SH DESCRIPTION
 .B thin_rmap
-outputs the reverse mapping for a region of thin provisioned pool blocks
-to the respective thin provisioned devices.
+outputs the reverse mapping stored in the metadata on a
+.I device
+or
+.I file
+between a region of thin provisioned pool blocks
+and the associated thin provisioned devices.
 
 .IP "\fB\\-\-region\fP \fI<block range>\fP".
 output reverse map