differences between OnLine 4 & 6

Hi there, We have to develop a small batch-input program using OnLine. Our develpoment System is a SCO box running OnLine 6.0 with ESQL/C 5, the target at our customers site is a UNISYS system running OnLine 4.1 with ESQL/C 4. Because of some reasons it is impossible to upgrade the system at our customers site. We want to develop at our own system and recompile the program at our customers site when it is finished. Can anybody tell me what are the differences between OnLine 4 and 6 and between ESQL 4 and 5. What do we have to look for ?? Where are the traps we have to avoid ?? Any tips would be appreciated. Many thanks in advance. bye Frank -- ----------------------------------------------------------------------- Frank Botte | eMail: frbo@marvin.central.de Waldmannstr. 6 | frbo@sbk-ks.de 34132 Kassel | Tel. (+49) (561) 4910614