Fixed man page

pw.1

@@ -3,7 +3,7 @@
 .Os
 .Sh NAME
 .Nm pw
-.Nd one line about what it does
+.Nd Password generator
 .\" .Sh LIBRARY
 .\" For sections 2, 3, and 9	only.
 .\" Not used in OpenBSD.
@@ -11,21 +11,32 @@
 .Nm
 .Fl h | v
 .Nm
-.Op Ar
+.Fl Op d
+.Fl Op l
+.Fl Op u
+.Fl Op s
 .Sh DESCRIPTION
 The
 .Nm
-utility processes files ...
-When no file arguments are given,
+command generates a random password and prints it on the standard output.
+If no flags for specifying which characters are allowed are given,
 .Nm
-will read from the standard input.
+acts as if all had been specified.
 .Pp
 The options are as follows:
 .Bl -tag -width Ds
 .It Fl h, \-help
 Print help text and exit.
-.It Fl v, \-version
+.It Fl \-version
 Print version info and exit.
+.It Fl d, \-digit
+Allow digits.
+.It Fl l, \-lower
+Allow lower case letters.
+.It Fl u, \-upper
+Allow upper case letters.
+.It Fl s, \-symbol
+Allow symbols and punctuation form the following list: _-=+<>,.!@#$%^&*.
 .El
 .\" .Sh CONTEXT
 .\" For section 9 functions only.