Document what the backtick returns if the command fails.

[p5sagit/p5-mst-13.2.git] / pod / perlfunc.pod

diff --git a/pod/perlfunc.pod b/pod/perlfunc.pod
index a56b4a8..cef469f 100644 (file)
--- a/pod/perlfunc.pod
+++ b/pod/perlfunc.pod
@@ -795,6 +795,8 @@ to check the condition at the top of the loop.
 
 =item cos EXPR
 
+=item cos
+
 Returns the cosine of EXPR (expressed in radians).  If EXPR is omitted,
 takes cosine of C<$_>.
 
@@ -3283,10 +3285,10 @@ Examples:
 
 The same template may generally also be used in unpack().
 
-=item package 
-
 =item package NAMESPACE
 
+=item package 
+
 Declares the compilation unit as being in the given namespace.  The scope
 of the package declaration is from the declaration itself through the end
 of the enclosing block, file, or eval (the same as the C<my> operator).
@@ -3344,7 +3346,7 @@ array in subroutines, just like C<shift>.
 =item pos
 
 Returns the offset of where the last C<m//g> search left off for the variable
-is in question (C<$_> is used when the variable is not specified).  May be
+in question (C<$_> is used when the variable is not specified).  May be
 modified to change that offset.  Such modification will also influence
 the C<\G> zero-width assertion in regular expressions.  See L<perlre> and
 L<perlop>.
@@ -4444,6 +4446,10 @@ permits these unnecessary but widely-supported conversions:
    %O  a synonym for %lo
    %F  a synonym for %f
 
+Conversions to scientific notation by C<%e>, C<%E>, C<%g> and C<%G>
+always have a two-digit exponent unless the modulus of the exponent is
+greater than 99.
+
 Perl permits the following universally-known flags between the C<%>
 and the conversion letter: