-dit(bf(-c, --checksum)) This forces the sender to checksum every file using
-a 128-bit MD4 checksum before the transfer (during the initial file-system
-scan). The receiver then checksums every existing file that has the same
-size as its sender-side counterpart in order to decide which files need to
-be transferred: files with either a changed size or changed checksum are
+dit(bf(-c, --checksum)) This forces the sender to checksum em(every)
+regular file using a 128-bit MD4 checksum. It does this during the initial
+file-system scan as it builds the list of all available files. The receiver
+then checksums its version of each file (if it exists and it has the same
+size as its sender-side counterpart) in order to decide which files need to
+be updated: files with either a changed size or a changed checksum are