PQA
From Just Solve the File Format Problem
PQA is a PalmOS database format used specifically for storing Web content via web clipping applications. The HTML portions are stored in Compressed Markup Language, a compact binary form of HTML content where the code is converted to a sequence of bytes of a tokenized format.
In PQA data, the CML code is then combined with other Web content such as images. The bytes of the binary representation are further compressed in a bitwise scheme where fewer than 8 bits are used to encode many common characters. The result is what is known as PQA format (for Palm Query Applications), which is placed into a database format similar to PDB and PRC.
