A cylinder, head, and sector of a hard drive. The sectors are a recording container format. The digital data on the disks may be both secondary container file formats and raw digital data content formats such as digital audio or ASCII encoded text.
A map of Earth showing lines of latitude (horizontally) and longitude (vertically). The lines are a grid, a method for dividing and containing recorded cartographical data. The land masses and oceans are cartographical data in a raw content (pictorial graphical) format. The text is in an alphanumerical symbolic raw content format.
A container format is a system for dividing physical storage space or virtual space for data. Data space can be divided evenly by a system of measurement, or divided unevenly with meta data. A grid may divide physical or virtual space with physical or virtual (dividers) borders, evenly or unevenly. Just as a physical container (such as a file cabinet) is divided by physical borders (such as drawers and file folders), data space is divided by virtual borders. Meta data such as a unit of measurement, address, or meta tags act as virtual borders in a container format. A template may be considered an abstract format for containing a solution as well as the content itself.