private void initSymbolTable()
	{
		symbolTable = new SymbolTable();
		symbolTable.setParent(null);
		symbolTable.setDepth(0);

		symbolTable.insert("readInt");
		symbolTable.insert("readFloat");
		symbolTable.insert("printBool");
		symbolTable.insert("printInt");
		symbolTable.insert("printFloat");
		symbolTable.insert("println");
	}