In some cases, however, widths need to be determined based on the
content. This depends on two ''intrinsic widths'': the minimum
intrinsic width (see [httphttps://dxrsearchfox.org/mozilla.org-central/search?q=typensIFrame%3AnsIFrame3A%20function%3AGetMinWidth3AGetMinISize&treepath=mozilla-central nsIFrame::GetMinWidthGetMinISize]) and the preferred intrinsicwidth (see [httphttps://dxrsearchfox.org/mozilla.org-central/search?q=typensIFrame%3AnsIFrame3A%20function%3AGetPrefWidth3AGetPrefISize&treepath=mozilla-central nsIFrame::GetPrefWidthGetPrefISize]). The concept of what these widths
represent is best explained by describing what they are on a paragraph
containing only text: in such a paragraph the minimum intrinsic width