My Market Toolkit provides system variables to help with your website design. A variable represents the data from a specific MMT field. They can be drag/dropped into templates and will render when a page is loaded.
Say you want a pages "Page Title" to show below the navigation on every page. When you build a template, you will create a container for the variable and then drag the "Title" variable into the container. When a page is rendered using that template, the Page Title will pull automatically.