<?xml version="1.0" encoding="UTF-8"?>
<!ENTITY % TYPE "CDATA">
<!ENTITY % BOOL "(true|false)">

<!ELEMENT tools (rule*,import*,(terminal|non-terminal)*)>

<!-- Rules -->

<!ELEMENT rule EMPTY>
<!ATTLIST rule id CDATA #REQUIRED
          terminal-part CDATA #IMPLIED
          terminal CDATA #IMPLIED
          discard %BOOL; "true"
          always-active %BOOL; "false">

<!-- Imports -->	 
            
<!ELEMENT import EMPTY>
<!ATTLIST import type %TYPE; #REQUIRED>

<!-- Terminals -->

<!ELEMENT terminal EMPTY>
<!ATTLIST terminal id CDATA #REQUIRED
	               type %TYPE; #IMPLIED>

<!-- Non-terminals-->

<!ELEMENT non-terminal EMPTY>
<!ATTLIST non-terminal id CDATA #REQUIRED
	                   type %TYPE; #IMPLIED>