Character entity references can also have the format &name; where name is a case-sensitive alphanumeric string. For example, Î» can also be encoded as &lambda; in an HTML document. The character entity references &lt; , &gt; , &quot; and &amp; are predefined in HTML and SGML, because, ,  and & are already used to delimit markup. This notably does not include XML's &apos; (') entity.
Lack of facial expression. Lack of facial expression: Introduction. An absence of expression on the face is medically called flat affect. In many cases, the face mirrors the underlying emotions, and the person has limited emotions or various emotional or psychological disorders.
It's sometimes hard to tell what caused the micro expression when reading others. Micro expressions can incorporate the entire face or body, or just a part of the face or body. Here are some examples of facial movements that could be incorporated into a micro expression and what emotion or desire they tend to indicate: Micro Expressions Indicating Negative Emotions Puckering lips, squinting, or blocking/touching one's eye- dislike, disinterest, disengagement, or disagreement