Key Point The majority of carbon dioxide produced by the active muscles is transported back to the lungs in the form of bicarbonate ions. Carbaminohaemoglobin CO2 transport also can occur when the gas binds with haemoglobin, forming a compound called Carbaminohaemoglobin.
Screenplay format first element: master headings. What is a master scene heading? In screenplay format, a master scene heading, also called primary slug line, is a one line of text in a screenplay that comes before the description of a scene. It gives a context for the whole scene.
Example of a page from a screenplay formatted for feature-length film. This is an excerpt from the original script of Natural Born Killers by Quentin Tarantino. Screenwriting, also called scriptwriting, is the art and craft of writing scripts for mass media such as feature films, television productions or video games. It is frequently a freelance profession.