ZPL encoding format of graphic files


I am looking for documentation on the decoding of non-compressed graphic files, created with the tool "ZBridge".
I am sending the sequence "~DYR:CE.GRF,A,G," with an extract of the created file (see CE.GRF attached) to a GX430t, which is working fine.
Now I want to display the file generated by ZBridge as a bitmap for control purposes, but can't find documations to it.
Who can give assistance on this ?
Best regards BE

CE.zip (4.23 KB)