fix for: Error in call to helpbutton function: at least one of $title and $linktext is required
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@@ -259,7 +259,7 @@ class hotpot_report extends hotpot_default_report {
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$br = $is_html ? '<br />' : "\n";
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$space = $is_html ? ' ' : "";
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$no_value = $is_html ? '--' : "";
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$help_button = $is_html ? helpbutton("discrimination", "", "quiz", true, false, "", true) : "";
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$help_button = $is_html ? helpbutton("discrimination", get_string('discrimination', 'quiz'), "quiz", true, false, "", true) : "";
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// table properties
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unset($table);
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$table->border = 1;
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