Adds bytecode and block, refs #728

doc/Language/glossary.pod6

@@ -125,12 +125,12 @@ called by name.
 Note that it is still allowed to have a name, but you cannot call it by
 that name:
 
-    =for code
-    # anonymous, but knows its own name
-    my $s = anon sub triple($x) { 3 * $x }
-    say $s.name;        # OUTPUT: «triple␤»
-    =for code :skip-test
-    say triple(42);     # OUTPUT: «Undeclared routine: triple␤»
+=for code
+# anonymous, but knows its own name
+my $s = anon sub triple($x) { 3 * $x }
+say $s.name;        # OUTPUT: «triple␤»
+=for code :skip-test
+say triple(42);     # OUTPUT: «Undeclared routine: triple␤»
 
 =head1 API
 X<|API>
@@ -213,9 +213,14 @@ signature. The code that does this is called the I<binder>.
 =head1 block
 X<|block>
 
+L<Blocks|https://docs.perl6.org/type/Block> are code object with its own lexical scope, which allows them to define variables without interfering with other in the containing block.
+
 =head1 bytecode
 X<|bytecode>
 
+Although Perl 6 looks like an interpreted language, since it uses the C<#!> form to run its scripts (and they are called I<scripts>), it is actually
+L<compiled to run in a virtual machine|https://www.reddit.com/r/perl6/comments/42dkme/perl6_not_being_an_interpreted_language/> so the compiler (currently Rakudo) generates L<bytecode |https://en.wikipedia.org/wiki/Bytecode> that runs either in MoarVM or the Java Virtual Machine, the two VMs currently supported.
+
 =head1 Camelia
 X<|Camelia>