ELT_SUB_SOUR, ELT_SUB_SOUR_TEXT<br>
</code><br>
</td>
- <td valign="top"><code>STRING</code><br>
+ <td valign="top"><code>NULL<br>STRING</code><br>
</td><td valign="top"><code>NULL</code><br>
</td>
</table>
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The following function creates a new <code>date_value</code> struct and initializes it properly, or copies an existing date value:
-<blockquote><code>struct date_value* <b>gedcom_new_date_value</b> (struct date_value* copy_from);<br></code></blockquote>
+<blockquote><code>struct date_value* <b>gedcom_new_date_value</b> (const struct date_value* copy_from);<br></code></blockquote>
<code></code>If the parameter <code>copy_from</code> is <code>NULL</code>, a new value is created and given initial values. If it is non-<code>NULL</code>, the value is copied into a new date value.<br>
<h3><a name="date"></a>struct date<br>
<li><code> AGE_NO_MODIFIER</code> : no modifier</li><li><code>AGE_LESS_THAN</code><code></code> : the modifier '<' is added</li><li><code>AGE_GREATER_THAN </code>: the modifier '>' is added</li>
</ul>
The following function creates a new <code>age_value</code> struct and initializes it properly, or copies an existing age value:
-<blockquote><code>struct age_value* <b>gedcom_new_age_value</b> (struct age_value* copy_from);<br></code></blockquote>
+<blockquote><code>struct age_value* <b>gedcom_new_age_value</b> (const struct age_value* copy_from);<br></code></blockquote>
<code></code>If the parameter <code>copy_from</code> is <code>NULL</code>, a new value is created and given initial values. If it is non-<code>NULL</code>, the value is copied into a new age value.<br>
<h3><a name="xref_value"></a>struct xref_value</h3>
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+<br>
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