1 CALL
2 procedure-name
2 variable
3? 
3 (
3.1? 
3.1+ ,
3.1.0 variable
3.1.0 constant
3.1.0 NULL
3.1.0 special-register
3.1.0 DLVALUE ( arguments )
3.1.0 cast-function-name (
3.1.0.1 variable
3.1.0.1 constant
3.1.0.2 )
3.2 )
3 SQL-descriptors
3 USING DESCRIPTOR descriptor-name

SQL-descriptors:

1? INTO
1.1! SQL
1.2 DESCRIPTOR
1.3! LOCAL
1.3?
1.3 GLOBAL
1.4 SQL-descriptor-name
2? USING
2.1! SQL (1) 
2.2 DESCRIPTOR
2.3! LOCAL
2.3?
2.3 GLOBAL
2.4 SQL-descriptor-name