Added usage statements to Backtrace.pod and Blob.pod (except for pack,

which seems out of place)

lib/Type/Backtrace.pod

@@ -17,25 +17,42 @@ example routines like C<&die> are hidden by default.
 
 =head2 method new
 
+Defined as:
+
     proto method new(*@, *%) {*}
     multi method new()
 
+Usage:
+
+    $backtrace = Backtrace.new
+
 Creates a new backtrace, using its calling location as the origin of the
 backtrace.
 
 =head2 method Str
 
+Defined as:
+
     multi method Str(Backtrace:D:) returns Str:D:
 
+Usage:
+
+    BACKTRACE.Str
+
 Returns a concise string representation of the backtrace, omitting
 routines marked as C<is hidden-from-backtrace>, and at the discretion of
 the implementor, also some routines from the setting.
 
 =head2 method full
 
+Defined as:
 
     multi method full(Backtrace:D:) returns Str:D:
 
+Usage:
+
+    BACKTRACE.full
+
 Returns a full string representation of the backtrace, including hidden
 frames, compiler-specific frames and those from the setting.
 

lib/Type/Blob.pod

@@ -13,32 +13,62 @@ list-like interface to lists of integers, typically unsigned integers.
 
 =head2 method new
 
+Defined as:
+
     method new(*@codes)
 
+Usage:
+
+    $blob = Blob.new(LIST)
+
 Creates a C<Blob> from a list of integers.
 
 =head2 method  Bool
 
+Defined as:
+
     multi method Bool(Blob:D:)
 
+Usage:
+
+    BLOB.Bool
+
 Returns C<False> if and only if the buffer is empty.
 
 =head2 method elems
 
+Defined as:
+
     multi method elems(Blob:D:) returns Int:D
 
+Usage:
+
+    BLOB.elems
+
 Returns the number of elements of the buffer.
 
 =head2 method decode
 
+Defined as:
+
     multi method decode(Blob:D: Str:D $encoding = 'UTF-8') returns Str:D
 
+Usage:
+
+    BLOB.decode[(ENCODING)]
+
 Applies an encoding to turn the blob into a L<Str|/type/Str>.
 
 =head2 method subbuf
 
+Defined as:
+
     method subbuf(Int $from, Int $len = self.elems) returns Blob:D
 
+Usage:
+
+    BLOB.subbuf(FROM [, LENGTH])
+
 Extracts a part of the invocant buffer, starting from the index with
 elements C<$from>, and taking C<$len> elements (or less if the buffer is
 shorter), and creates a new buffer as the result.
@@ -47,8 +77,14 @@ shorter), and creates a new buffer as the result.
 
 =head2 method unpack
 
+Defined as:
+
     method unpack(Blob:D: $template) returns List:D
 
+Usage:
+
+    BLOB.unpack(TEMPLATE)
+
 Extracts features from the blob according to the template string, and
 returns them as a list.