-.pa 1
-.he 'SYNC (II)'6/12/72'SYNC (II)'
-.ti 0
-NAME sync -- update super-block
-.sp
-.ti 0
-SYNOPSIS sys sync / sync = 36.; not in assembler
-.sp
-.ti 0
-DESCRIPTION sync\b\b\b\b____
-causes the super block for all file systems to be written out.
-It is only necessary on systems in which
-this writing may be delayed
-for a long time, i.e., those which
-incorporate hardware protection facilities.
-
+.th SYNC II 8/5/73
+.sh NAME
+sync \*- update super-block
+.sh SYNOPSIS
+(sync = 36.; not in assembler)
+.br
+.ft B
+sys sync
+.ft R
+.sh DESCRIPTION
+.it Sync
+causes all information in core
+memory that should be on disk to be written out.
+This includes modified super blocks,
+modified i-nodes, and delayed block I/O.
+.s3