Changes

Text will not wrap the image if you use "center" or "none" after <code>|thumb|</code><br /><pre>The sample code for the above images: [[file:FL EPR.jpg|thumb|center|1000px|Untreated Inspiratory Flow Limitation]]</pre>

Sample text in a text block <nowiki>(Similar to <nowiki>, <pre>, or <code>)</nowiki>

Just indent the line a couple of spaces and the text is placed in a block like above. No tags required.