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diff --git a/tksao/magnifier/parser.Y b/tksao/magnifier/parser.Y
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+// Copyright (C) 1999-2016
+// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+// For conditions of distribution and use, see copyright notice in "copyright"
+
+%pure-parser
+%parse-param {Magnifier* mg}
+%lex-param {mgFlexLexer* ll}
+%parse-param {mgFlexLexer* ll}
+
+%{
+#define YYDEBUG 1
+
+#include <stdlib.h>
+#include "magnifier.h"
+
+#undef yyFlexLexer
+#define yyFlexLexer mgFlexLexer
+#include <FlexLexer.h>
+
+extern int mglex(void*, mgFlexLexer*);
+extern void mgerror(Magnifier*, mgFlexLexer*, const char*);
+%}
+
+%union {
+  float real;
+  int integer;
+  void* ptr;
+  char str[1024];
+}
+
+%token <integer> INT
+%token <ptr> POINTER
+
+%token BBOX_
+%token CLEAR_
+%token DEBUG_
+%token FALSE_
+%token GET_
+%token HEIGHT_
+%token HIDE_
+%token OFF_
+%token ON_
+%token N_
+%token NO_
+%token RESET_
+%token SHOW_
+%token TRUE_
+%token UPDATE_
+%token VERSION_
+%token WIDTH_
+%token Y_
+%token YES_
+
+%%
+
+command : DEBUG_ debug
+	| CLEAR_ {mg->updateCmd(0);}
+	| GET_ get
+	| HIDE_ {mg->hideCmd();}
+	| RESET_ {mg->resetCmd();}
+	| SHOW_ {mg->showCmd();}
+	| UPDATE_ POINTER {mg->updateCmd($2);}
+	| VERSION_ {mg->msg("Magnifier 1.0");}
+	;
+
+debug	: ON_ {yydebug=1;}
+	| OFF_ {yydebug=0;}
+	;
+
+get	: BBOX_ {mg->getBBoxCmd();}
+	| HEIGHT_ {mg->getHeightCmd();}
+	| WIDTH_ {mg->getWidthCmd();}
+	;
+
+%%
+
+
+
+