diff --git a/README b/README
index 8033776..ac44696 100644
--- a/README
+++ b/README
@@ -60,7 +60,7 @@ The following tools are implemented ('*' == finished, '#' == UTF-8 support,
 =*| rm              yes                          none (-i)
 =*| rmdir           yes                          none
 #   sed             yes                          none
-=   seq             non-posix                    none
+=*| seq             non-posix                    none
 =*| setsid          non-posix                    none
 =*| sha1sum         non-posix                    none
 =*| sha256sum       non-posix                    none
diff --git a/seq.1 b/seq.1
index e186e79..baf1e64 100644
--- a/seq.1
+++ b/seq.1
@@ -1,4 +1,4 @@
-.Dd January 30, 2015
+.Dd March 20, 2015
 .Dt SEQ 1
 .Os sbase
 .Sh NAME
@@ -8,29 +8,32 @@
 .Nm
 .Op Fl w
 .Op Fl f Ar fmt
-.Op Fl s Ar separator
-.Op Ar start Op Ar step
-.Ar end
+.Op Fl s Ar sep
+.Op Ar startnum Op Ar step
+.Ar endnum
 .Sh DESCRIPTION
 .Nm
-will print a sequence of numbers from
-.Ar start
+writes a sequence of numbers from
+.Ar startnum
 (default: 1) to
-.Ar end ,
+.Ar endnum
 in
 .Ar step
-intervals (default: 1).
+intervals (default: 1)
+to stdout.
 .Sh OPTIONS
 .Bl -tag -width Ds
-.It Fl f Ar format
-Specifies the format used for output lines, as per
+.It Fl f Ar fmt
+Use
+.Ar fmt
+as the output line format according to
 .Xr printf 3 .
-.It Fl s Ar separator
-Specifies the separator to print between output lines.
+.It Fl s Ar sep
+Print
+.Ar sep
+between output lines. The default is "\en".
 .It Fl w
-Tells
-.Nm
-to print out lines in equal width.
+Print out lines in equal width.
 .El
 .Sh SEE ALSO
 .Xr printf 3
diff --git a/seq.c b/seq.c
index 27fe7e1..9e1f87b 100644
--- a/seq.c
+++ b/seq.c
@@ -14,7 +14,7 @@ digitsleft(const char *d)
 	if (*d == '+')
 		d++;
 	exp = strpbrk(d, "eE");
-	shift = exp ? estrtonum(&exp[1], INT_MIN, INT_MAX) : 0;
+	shift = exp ? estrtonum(exp + 1, INT_MIN, INT_MAX) : 0;
 
 	return MAX(0, strspn(d, "-0123456789") + shift);
 }
@@ -72,8 +72,8 @@ format:
 static void
 usage(void)
 {
-	eprintf("usage: %s [-f fmt] [-s separator] [-w width] [start"
-		       " [step]] end\n", argv0);
+	eprintf("usage: %s [-f fmt] [-s sep] [-w] [startnum"
+		       " [step]] endnum\n", argv0);
 }
 
 int
@@ -142,7 +142,7 @@ main(int argc, char *argv[])
 			fputs(sep, stdout);
 		printf(fmt, out);
 	}
-	printf("\n");
+	putchar('\n');
 
 	return 0;
 }