Thai characters are auto-composed in this mode. No column realignment
is performed.
Mode 3: Composed with space alignment
In this mode of composing, three consecutive spaces cause column
realignment. The realignment occurs whenever composing routine finds
three consecutive spaces. Thus if all fields have at least three trailing
spaces, then all fields of all records will be properly aligned.
Mode 4: Composed with EOF alignment
In this mode of composing, the EOF character (Hexadecimal 'EA')
also causes column realignment. Whenever the composing routine finds
a single EOF, it deletes the EOF and performs column realignment.
If two consecutive EOFs are found, no realignment occurs, one EOF
is deleted, and one EOF is treated as data.
Mode 5: Composed with space and EOF alignment
This mode of composing performs the column realignment function
of both mode 3 and mode 4.