Overall structure in FSD
<schema xmlns='http://www.systemsunion.com/2001/TD/SSTransform/fsd/' version='1.0'>
<schema>
<sequence | choice
name
output='yes'
min-occur='0'
max-occur='1'>
<record
name
output='yes'
record-sep
min-occur=0
max-occur=1>
<field
name
output='yes'
field-sep
valid-value
default-value
leading-chars
trailing-chars
max-length='128'
min-length='0'
truncate='no'
quoted='auto'>
</field>
</record>
</sequence | choice>
</schema>