src/pset-impl.lisp: Accept `yup' and `nope' as booleans.

[sod] / doc / syntax.tex

diff --git a/doc/syntax.tex b/doc/syntax.tex
index 825aaad..07b7ce7 100644 (file)
--- a/doc/syntax.tex
+++ b/doc/syntax.tex
@@ -462,10 +462,10 @@ above, are as follows.
 
 \item The @|boolean| output type denotes a boolean value, which may be either
   true or false.  A value of type @|id| is considered true if it is @|true|,
-  @|t|, @|yes|, @|on|, or @|verily|; or false if it is @|false|, @|nil|,
-  @|no|, @|off|, or @|nowise|; it is erroneous to provide any other
-  identifier where a boolean value is wanted.  A value of type @|int| is
-  considered true if it is nonzero, or false if it is zero.
+  @|t|, @|yes|, @|on|, @|yup|, or @|verily|; or false if it is @|false|,
+  @|nil|, @|no|, @|off|, @|nope|, or @|nowise|; it is erroneous to provide
+  any other identifier where a boolean value is wanted.  A value of type
+  @|int| is considered true if it is nonzero, or false if it is zero.
 
 \item The @|symbol| output type denotes a Lisp symbol.
 
@@ -726,8 +726,9 @@ The @<list>$[\mbox{@<identifier>}]$ names the direct superclasses for the new
 class.  It is an error if any of these @<identifier>s does not name a defined
 class.  The superclass list is required, and must not be empty; listing
 @|SodObject| as your class's superclass is a good choice if nothing else
-seems suitable.  It's not possible to define a \emph{root class} in the Sod
-language: you must use Lisp to do this, and it's quite involved.
+seems suitable.  A class with no direct superclasses is called a \emph{root
+class}.  It is not possible to define a root class in the Sod language: you
+must use Lisp to do this, and it's quite involved.
 
 The @<properties> provide additional information.  The standard class
 properties are as follows.