clarify salloc handling of signals

doc/man/man1/salloc.1

@@ -1077,12 +1077,12 @@ The block name on Blue Gene systems only.
 While salloc is waiting for a PENDING job allocation, most signals will cause
 salloc to revoke the allocation request and exit.
 
-However, if the allocation has been granted and salloc has already started the
-command specified in its command line parameters salloc will ignore most
-signals.  salloc will not exit or release the allocation until the command
-exits.  One notable exception is SIGHUP; a HUP signal will cause salloc to
+However if the allocation has been granted and salloc has already started the
+specified command, then salloc will ignore most signals.
+salloc will not exit or release the allocation until the command exits.
+One notable exception is SIGHUP. A SIGHUP signal will cause salloc to
 release the allocation and exit without waiting for the command to finish.
-Another exception is SIGTERM, which will be forwarded to the spawned program.
+Another exception is SIGTERM, which will be forwarded to the spawned process.
 
 .SH "EXAMPLES"
 .LP