or with master page features in a multiple-page document. Master pages may include both grid elements and template elements such as header and footer elements, automatic page numbering, and automatic table of contents features. Static versus dynamic layouts Static layouts allow for more control over the aesthetics, and thorough optimization of space around and overlapping irregular-shaped content than dynamic layouts. In web design, this is sometimes referred to as a fixed width layout; but the entire layout may be scalable in size while still maintaining the original proportions, static placement, and style of the content. All raster image formats are static layouts in effect, but a static layout may include searchable text by separating the text from the graphics. In contrast, electronic pages allow for dynamic layouts with swapping content, personalization of styles, text scaling, image scaling, or reflowable content with variable page sizes often referred to as fluid or liquid layout. Dynamic layouts are more likely to separate presentation from content, which comes with its own advantages. A dynamic layout lays out all text and images into rectangular areas of rows and columns. As these areas' widths and heights are defined to be percentages of the available screen, they are responsive to varying screen dimensions. They'll automatically ensure maximized use of available space while always staying adapted optimally both on-screen resizes and hardware-given restrictions. Text may freely be resized to provide users' individual needs on legibility while never disturbing a given layout's proportions. The content's overall arrangement on screen this way may always remain as it was originally designed. Static layout design may involve more graphic design and visual art skills, whereas dynamic layout design may involve more interactive design and content management skills to thoroughly anticipate content variation. Motion graphics don't fit neatly into either category, but may involve layout skills or careful consideration of how the motion may affect the layout. In either case, the element of motion makes it a dynamic layout, but one that warrants motion graphic design more than static graphic design or interactive design. Electronic pages may utilize both static and dynamic layout features by dividing the pages or by combining the effects. For example, a section of the page such as a web banner may contain static or motion graphics contained within a swapping content area. Dynamic or live text may be wrapped around irregularly shaped images by using invisible spacers to