S99: boolean context

S99-glossary.pod

@@ -172,19 +172,39 @@ Particularly cute, because L</phaser>s expect blasts.
 A source code section delimited by braces.
 Used for L<control flow> and as L</scope>.
 
-=head2 boxing
+=head2 Bool
 
-Operation transforming a L</native> L</value> into an object.
-The reverse operation is unboxing.
-The relation between boxed/native should not be confused
-with L</container>/containee.
+L</Boolean> type.
+
+=head2 boolean
+
+L</Value> of type L</Bool>. Apart the class itself, can be either <True> or <False>.
+
+=head2 boolean context
+
+A L</context> that forces an L</expression> to give a L</boolean> value.
+The L</prefix> L</operators> C<so>, C<not> and their
+repective higher L</precedence> C<?> and <!> forms force a boolean context.
+The L</predicate> part of a L</control flow> L</statement> forces a boolean context.
+A class can define a C<Bool> method to handle the boolean context.
+For L</native>s, within L</MoarVM>, it is handled by L</MVMBoolificationSpec> member
+of the L</stable> structure.
 
 =head2 bootstrap
 
 Starting up a system that uses itself to define, build or compile itself, is a practical exercise on solving the chicken and egg problem.
 This phase is called bootstrap. L<Documentation|https://github.com/MoarVM/MoarVM/blob/master/docs/bootstrap.markdown>
 about booststrapping the L</6model> of L<MoarVM>
 
+=head2 boxing
+
+Operation transforming a L</native> L</value> into an object.
+The reverse operation is unboxing.
+The relation between boxed/native should not be confused
+with L</container>/containee.
+
+=head2 branch
+
 =head2 brb
 
 Be Right Back.  Only L</afk> for a little while.
@@ -1691,8 +1711,8 @@ L<http://doc.perl6.org/type/Whatever>.
 
 =head2 whitespace
 
-Any Perl 6 L</token>s may or must be separated by tokens.
-L</comment>s are Whitespaces .
+Any Perl 6 L</token> may or must be separated by tokens.
+L</comment>s are whitespaces .
 
 =head2 WIP