This patient woke up in recovery with his groin pain gone. This is a inguinal hernia mesh patch that was placed using an open technique. The arrow points to the ilio-inguinal nerve that was entrapped by the mesh causing hernia mesh pain. The nerve is grossly thickened and neuromatos where it hits the mesh.
Each language has its strengths and weaknesses. The primary purpose of a schema language is to specify what the structure of an XML document can be. This means which elements can reside in which other elements, which attributes are and are not legal to have on a particular element, and so forth.
In markup languages, Schematron is a rule-based validation language for making assertions about the presence or absence of patterns in XML trees. It is a structural schema language expressed in XML using a small number of elements and XPath. In a typical implementation, the Schematron schema XML is processed into normal XSLT code for deployment anywhere that XSLT can be used. Schematron is capable of expressing constraints in ways that other XML schema languages like XML Schema and DTD cannot. For example, it can require that the content of an element be controlled by one of its siblings.