Data blocks (blobs for short) are used for binary file I/O.
To read a file, you use Get to read a block of data, and then disassemble that block using functions GetByte, GetWord, GetLong and GetStr. To write into a binary file, you build the block using SetByte, SetWord, SetLong and SetStr, and then write it into the file using Put.
Version Differences: In PCC 1.x, blobs are actually strings and are limited to 255 bytes. PCC2 implements blobs as a separate data type, and has no size limit.
