File: atomic-mass-table.dtd

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<!--
 * Copyright (C) 2013  D Haley
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-->

<!-- This is a DTD for the natural abundance data file -->
<!--root node -->
<!ELEMENT atomic-mass-table (entry*) >
<!-- natural abundance data node, used to encapsulate mass/fraction data--> 
<!ELEMENT entry (natural-abundance*) > 

<!ELEMENT natural-abundance (mass,isotope+) > 
<!ELEMENT isotope (mass,abundance) > 

<!ELEMENT mass EMPTY>
<!ELEMENT abundance EMPTY>



<!-- Mass units must be in unified atomic mass units, with value "u"
	this option exists to hypothetically add support to other systems
	at some later time. -->
<!ATTLIST atomic-mass-table mass-units CDATA #REQUIRED>
<!-- Abundance units must be in "Mole Fraction" -->
<!ATTLIST atomic-mass-table abundance-units CDATA #REQUIRED>
<!-- Symbol for element, eg hydrogen would be "H", helium "He" and so on-->
<!ATTLIST entry symbol CDATA #REQUIRED>
<!-- Atomic number for element, integer -->
<!ATTLIST entry atomic-number CDATA #REQUIRED>
<!-- Mass value for element/isotope, in units that are specified in atomic-mass-table: 
	* From element, computed by A_r = \frac{\sigma m_i x_i}{\sigma x_i},
	  where xi are the isotope natural abundances, and m_i are
	  the isotopes
	* When used in an isotope , for the specific isotope 
	-->
<!ATTLIST mass value CDATA #REQUIRED>
<!-- Mass error for element - the exact statistical meaning of this value is not specified here --> 
<!ATTLIST mass error CDATA #REQUIRED>
<!-- Typical natural abundance value (0,1], for the reported isotope -->
<!ATTLIST abundance value CDATA #REQUIRED>
<!-- Abundance error - should be taken with a pinch of salt, as abundance values can change by material origin-->
<!ATTLIST abundance error CDATA #REQUIRED>

<!ATTLIST isotope mass-number CDATA #REQUIRED>