Hydrated lime, also known as calcium hydroxide lime (Ca(OH)Â², is available in white powder form and can be mixed directly in solution tanks and employed in dry form. Hydrated lime is commonly used as a primary coagulant for the treatment of industrial waste streams and contributes to the clarification of water.
The Difference Between XML and HTML. XML and HTML were designed with different goals: XML was designed to carry data - with focus on what data is. HTML was designed to display data - with focus on how data looks. XML tags are not predefined like HTML tags are.
The purpose of an XML Schema is to define the legal building blocks of an XML document: 1  the elements and attributes that can appear in a document. 2  the number of (and order of) child elements. 3  data types for elements and attributes.  default and fixed values for elements and attributes.