Metadata, which is generally defined as “data about data,” is normally used throughout an asset specification. Essentially, it includes relative attributes—either or both technical and content data—and/or perhaps any further descriptive information about an image or asset. Metadata may consists of editorial information, keywords or indexing information, tags, pointers, codes, flags, and more.

Any portion of the metadata can be used to enable or disable interactive functions. An EPG-related operation is one example. Another specific example would be in the case of content stream or a portion, which usually associated with a single television (TV) program. Basically, the content stream (e.g., codes, pointers, tags, editorial information, and more) that is associated with one TV program can be used to describe or index segments of at least one program, likewise of the relevant portions of content streams.

Metadata are usually used to define or describe some controlling data used in developing and designing software architectures, of which appear to be more configurable or abstract. The term metadata is commonly included in most executable file formats (e.g., TIFF, JPEG, and more), which are potentially configured and have behavioral runtime features.

Program metadata in particular, are hard if not almost unfeasible to be accurately distinguished vis-á-vis the overall stored-program computing architecture. A machine that reads a metadata and acts upon accordingly simply illustrates what is known as computational instruction, wherein metadata is of less significance. Apparently, program metadata may have more function and use than the standard metadata.

In conclusion, program metadata evidently contain metadata that may function more or be used further than the standard metadata. And while other metadata provides support reflection at a runtime, there are others which include further substantial annotations, hence enabling usage for several development tools.

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