The parsing table can contain comment lines. A comment line must begin with the pound sign (#) and must be on a line by itself.
The fields in each line of the parsing table must be separated with white space. Any combination of spaces and tabs can be used.
Please read this chapter from beginning to end. There are many forward and backward references.
The table is divided into three logical sections. The actual table does not need to be divided into sections but it helps organize the information. The first section defines the Host IDs. The second section defines Message IDs. The third section defines QUECMDs.