Aztec Code is a high density 2 dimensional matrix style bar code symbology that can encode up to 3832 numeric or 3067 alphabetic characters or 1914 bytes of data. The symbol is built on a square grid with a bulls-eye pattern at its center. Data is encoded in a series of "layers" that circle around the bullseye pattern. Each additional layer completely surrounds the previous layer thus causing the symbol to grow in size as more data is encoded yet the symbol remains square. Aztec's primary features include: a wide range of sizes allowing both small and large messages to be encoded, orientation independent scanning and a user selectable error correction mechanism.
The SDK includes API [static library and dynamic library], ActiveX and ASP Compnent. Using the SDK, you can

* Create Aztec barcode symbols from alpha/numerical text/binary.
* Output barcode image with the formats such as BMP, GIF, JPEG, PNG.
* Render barcode images on any devices, and create device resolution dependent images.
* Full controls of the bar code image styles, such as background color, bar color, image quality, rotation angle, x-dimension, captions, etc.
* Use selectable error correction, from 5% to 95% of data region.
* Support structured Append mode.
* Support Tilde mode
* Support 36 error correction levels

Dynamic library
A dinamic library is library of executable functins or data that can be used by a Windows Application. Typically, a DLL provides one or more particular functions and a program accesses the functions by creating either a static or dynamic link to the DLL. A static link remains constant during program execution while a dynamic link is created by the program as needed. DLLs can also contain just data. DLL files usually end with the extension .dll,.exe., drv, or .fon.
A DLL can be used by several applications at the same time.

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