--- a/doc/interpreter/grammar.txi	Wed Feb 07 23:29:40 2024 -0500
+++ b/doc/interpreter/grammar.txi	Wed Feb 07 20:59:00 2024 -0800
@@ -38,60 +38,58 @@
 
 @subsubheading Categories:
 
-@ref{XREFkwcategoryUtilityFunctions, , @w{Utility Functions}} |
-@ref{XREFkwcategoryVariableDeclaration, , @w{Variable Declaration}} |
-@ref{XREFkwcategoryFunctionDefinition, , @w{Function Definition}} |
-@ref{XREFkwcategoryControlStructures, , @w{Control Statements}} |
-@ref{XREFkwcategoryIteratingStructures, , @w{Iterating Structures}} |
-@ref{XREFkwcategoryClassdefStructures, , @w{Classdef Structures}} |
-@ref{XREFkwcategoryExecutionEnvironment, , @w{Execution Environment}}
-
+@ref{XREFkwcategoryUtilityFunctions,,@w{Utility Functions}} |
+@ref{XREFkwcategoryVariableDeclaration,,@w{Variable Declaration}} |
+@ref{XREFkwcategoryFunctionDefinition,,@w{Function Definition}} |
+@ref{XREFkwcategoryControlStructures,,@w{Control Statements}} |
+@ref{XREFkwcategoryIteratingStructures,,@w{Iterating Structures}} |
+@ref{XREFkwcategoryClassdefStructures,,@w{Classdef Structures}} |
+@ref{XREFkwcategoryExecutionEnvironment,,@w{Execution Environment}}
 
 @subsubheading Alphabetical listing:
 
-@ref{XREF__FILE__, __FILE__} |
-@ref{XREF__LINE__, __LINE__} |
-@ref{XREFbreak, , break} |
-@ref{XREFcase, , case} |
-@ref{XREFcatch, , catch} |
-@ref{XREFclassdef, , classdef} |
-@ref{XREFcontinue, , continue} |
-@ref{XREFdo, , do} |
-@ref{XREFelse, , else} |
-@ref{XREFelseif, , elseif} |
-@ref{XREFend, , end} |
-@ref{XREFend_try_catch, , end_try_catch} |
-@ref{XREFend_unwind_protect, , end_unwind_protect} |
-@ref{XREFendclassdef, , endclassdef} |
-@ref{XREFendenumeration, , endenumeration} |
-@ref{XREFendevents, , endevents} |
-@ref{XREFendfor, , endfor} |
-@ref{XREFendfunction, , endfunction} |
-@ref{XREFendif, , endif} |
-@ref{XREFendmethods, , endmethods} |
-@ref{XREFendparfor, , endparfor} |
-@ref{XREFendproperties, , endproperties} |
-@ref{XREFendswitch, , endswitch} |
-@ref{XREFendwhile, , endwhile} |
-@ref{XREFenumeration, , endenumeration} |
-@ref{XREFevents, , events} |
-@ref{XREFfor, , for} |
-@ref{XREFfunction, , function} |
-@ref{XREFglobal, , global} |
-@ref{XREFif, , if} |
-@ref{XREFkwpropertymethods, , methods} |
-@ref{XREFotherwise, , otherwise} |
-@ref{XREFparfor, , parfor} |
-@ref{XREFpersistent, , persistent} |
-@ref{XREFkwpropertyproperties, , properties} |
-@ref{XREFreturn, , return} |
-@ref{XREFswitch, , switch} |
-@ref{XREFtry, , try} |
-@ref{XREFuntil, , until} |
-@ref{XREFunwind_protect, , unwind_protect} |
-@ref{XREFunwind_protect_cleanup, , unwind_protect_cleanup} |
-@ref{XREFwhile, , while}
-
+@ref{XREF__FILE__,,__FILE__} |
+@ref{XREF__LINE__,,__LINE__} |
+@ref{XREFbreak,,break} |
+@ref{XREFcase,,case} |
+@ref{XREFcatch,,catch} |
+@ref{XREFclassdef,,classdef} |
+@ref{XREFcontinue,,continue} |
+@ref{XREFdo,,do} |
+@ref{XREFelse,,else} |
+@ref{XREFelseif,,elseif} |
+@ref{XREFend,,end} |
+@ref{XREFend_try_catch,,end_try_catch} |
+@ref{XREFend_unwind_protect,,end_unwind_protect} |
+@ref{XREFendclassdef,,endclassdef} |
+@ref{XREFendenumeration,,endenumeration} |
+@ref{XREFendevents,,endevents} |
+@ref{XREFendfor,,endfor} |
+@ref{XREFendfunction,,endfunction} |
+@ref{XREFendif,,endif} |
+@ref{XREFendmethods,,endmethods} |
+@ref{XREFendparfor,,endparfor} |
+@ref{XREFendproperties,,endproperties} |
+@ref{XREFendswitch,,endswitch} |
+@ref{XREFendwhile,,endwhile} |
+@ref{XREFenumeration,,endenumeration} |
+@ref{XREFevents,,events} |
+@ref{XREFfor,,for} |
+@ref{XREFfunction,,function} |
+@ref{XREFglobal,,global} |
+@ref{XREFif,,if} |
+@ref{XREFkwpropertymethods,,methods} |
+@ref{XREFotherwise,,otherwise} |
+@ref{XREFparfor,,parfor} |
+@ref{XREFpersistent,,persistent} |
+@ref{XREFkwpropertyproperties,,properties} |
+@ref{XREFreturn,,return} |
+@ref{XREFswitch,,switch} |
+@ref{XREFtry,,try} |
+@ref{XREFuntil,,until} |
+@ref{XREFunwind_protect,,unwind_protect} |
+@ref{XREFunwind_protect_cleanup,,unwind_protect_cleanup} |
+@ref{XREFwhile,,while}
 
 @subheading Utility Functions:
 @anchor{XREFkwcategoryUtilityFunctions}
@@ -100,87 +98,124 @@
 
 @DOCSTRING(iskeyword)
 
-
 @subheading Variable Declaration:
 @anchor{XREFkwcategoryVariableDeclaration}
+
 @DOCSTRING(global)
+
 @DOCSTRING(persistent)
 
-
 @subheading Function Definition:
 @anchor{XREFkwcategoryFunctionDefinition}
+
 @DOCSTRING(function)
+
 @DOCSTRING(endfunction)
+
 @DOCSTRING(end)
+
 @DOCSTRING(return)
 
-
 @subheading Control Statements:
 @anchor{XREFkwcategoryControlStructures}
+
 @DOCSTRING(if)
+
 @DOCSTRING(else)
+
 @DOCSTRING(elseif)
+
 @DOCSTRING(endif)
+
 @DOCSTRING(switch)
+
 @DOCSTRING(case)
+
 @DOCSTRING(otherwise)
+
 @DOCSTRING(endswitch)
+
 @DOCSTRING(try)
+
 @DOCSTRING(catch)
+
 @DOCSTRING(end_try_catch)
+
 @DOCSTRING(unwind_protect)
+
 @DOCSTRING(unwind_protect_cleanup)
+
 @DOCSTRING(end_unwind_protect)
 
-
 @subheading Iterating Structures:
 @anchor{XREFkwcategoryIteratingStructures}
+
 @DOCSTRING(for)
+
 @DOCSTRING(endfor)
+
 @DOCSTRING(while)
+
 @DOCSTRING(endwhile)
+
 @DOCSTRING(do)
+
 @DOCSTRING(until)
+
 @DOCSTRING(parfor)
+
 @DOCSTRING(endparfor)
+
 @DOCSTRING(break)
+
 @DOCSTRING(continue)
 
-
 @subheading Classdef Structures:
 @anchor{XREFkwcategoryClassdefStructures}
+
 @DOCSTRING(classdef)
+
 @DOCSTRING(endclassdef)
+
 @c methods definition must be manually created to avoid
-@c collision with function of same name
-@deftypefn {} {} properties @anchor{XREFkwpropertyproperties}
+@c collision with function of the same name.
+@anchor{XREFkwpropertyproperties}
+@deftypefn {} {} properties
 Mark the beginning of a block of properties in a classdef definition.  Note
 that @ref{XREFproperties, , the function @qcode{"properties"}} is a function
 that lists the properties of a classdef class or object.
 @seealso{@ref{XREFendproperties, , endproperties}}
 @end deftypefn
+
 @DOCSTRING(endproperties)
+
 @c methods definition must be manually created to avoid
-@c collision with function of same name
-@deftypefn {} {} methods @anchor{XREFkwpropertymethods}
+@c collision with function of the same name.
+@anchor{XREFkwpropertymethods}
+@deftypefn {} {} methods
 Mark the beginning of a block of methods in a classdef definition.  Note that
 @ref{XREFmethods, , the function @qcode{"methods"}} is a function that lists
 the methods of a class or object.
 @seealso{@ref{XREFendmethods, , endmethods}}
 @end deftypefn
+
 @DOCSTRING(endmethods)
+
 @DOCSTRING(events)
+
 @DOCSTRING(endevents)
+
 @DOCSTRING(enumeration)
+
 @DOCSTRING(endenumeration)
 
-
 @subheading Execution Environment:
 @anchor{XREFkwcategoryExecutionEnvironment}
+
 @DOCSTRING(__FILE__)
+
 @DOCSTRING(__LINE__)
 
-
 @node Parser
 @section Parser
 @cindex parser