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support refers to not supporting the `ALLOW-FROM` option.\r\nThe `X-Frame-Options` header has been obsoleted by [the `frame-ancestors` directive](https://www.w3.org/TR/CSP2/#directive-frame-ancestors) from Content Security Policy Level 2.&#34;,&#34;notes_by_num&#34;:{},&#34;usage_perc_y&#34;:10.57,&#34;usage_perc_a&#34;:84.59,&#34;ucprefix&#34;:false,&#34;parent&#34;:&#34;&#34;,&#34;keywords&#34;:&#34;x-frame-options,frame,options,header,clickjacking&#34;,&#34;ie_id&#34;:&#34;&#34;,&#34;chrome_id&#34;:&#34;5760041927835648&#34;,&#34;firefox_id&#34;:&#34;&#34;,&#34;webkit_id&#34;:&#34;&#34;},&#34;indeterminate-checkbox&#34;:{&#34;title&#34;:&#34;indeterminate checkbox&#34;,&#34;description&#34;:&#34;Indeterminate checkboxes are displayed in a state which is distinct both from being checked or being unchecked. 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              <td class="lines-code"><pre class="lang-json"><code><ol 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