File: //var/softaculous/invoices/install.xml
<softinstall xmlns="http://www.softaculous.com">
<settings>
<group>
<heading>{{ad_act}}</heading>
<input type="text" name="admin_email" size="30" value="admin" softmail="true">
<head>{{ad_email}}</head>
<handle>__email_address</handle>
</input>
<input type="text" name="admin_pass" size="30" value="pass">
<head>{{ad_pass}}</head>
<handle>__ad_pass</handle>
</input>
</group>
<group>
<heading>{{ad_lang}}</heading>
<input type="select">
<select name="language">
<option value="en_GB">English</option>
<option value="ca_ES">Catalan</option>
<option value="cs_CZ">Czech</option>
<option value="da_DK">Danish</option>
<option value="de_CH">Swiss German</option>
<option value="de_DE">German</option>
<option value="el_GR">Greek</option>
<option value="es_ES">Spanish</option>
<option value="fi_FI">Finnish</option>
<option value="fr_FR">French</option>
<option value="gl_ES">Galician</option>
<option value="it_IT">Italian</option>
<option value="lv_LV">Latvian</option>
<option value="mt_MT">Maltese</option>
<option value="nb_NO">Norwegian</option>
<option value="nl_NL">Dutch</option>
<option value="pt_PT">Portuguese</option>
<option value="ro_RO">Romanian</option>
<option value="sk_SK">Slovak</option>
<option value="sl_SI">Slovenian</option>
<option value="sq_AL">Albanian</option>
<option value="sv_SE">Swedish</option>
<option value="tr_TR">Turkish</option>
</select>
<head>{{select_lang}}</head>
</input>
</group>
</settings>
<db>mysql</db>
</softinstall>