What is the purpose of USROPN keyword?

WHAT IS AS/400 SYNORIO?

Q. 1.What are the in build functions in CL program and what are uses of thes in build functions? 2.How we can create own command in CL program? 3.What is use of STRSRVJOB?

Q.1.What is differences in STRDBG and STRISDB debugging commands? 2.Where we should use STRDBG and STRISDB Debugging commands?

Q. HOw can read multimember file through RPG/400 and CL/400 Actully i know that we can Read multimember file in RPG through EXEFILE and EXEMBR and in cl through OVRDBF and MEMBER(3)....But i want to read 3 members by CL Program And RPG/400 program.Please write the coding(Program) for both RPG/400 and CL/400 programs? 2.What are the full forms(stands) of EXEFILE and EXEMBR?

how we lock a pf???? what are the parameters used in this command.how we understand whether an object is locked or not?? using command .....we have to use *PSSR? and trough *status..how??.if we give an eg to me???pls answer me anyone..

Q1. How to use signature in service program and ILE.? Q2.what is use of signature and binder language and what is the relation between them?

WHAT IS DECIMAL DATA ERROR IN RPG IV...WHEN WILL IT HAPPENS?

what is sessional error or divice error in rpg IV?..when will it happens...Give few examples?

How a field is renamed in rpg IV?..give answer with example?

what are the types of errors available in rpg IV or 400.Like decimal data error,sessional error or device error etc...means important error occurings,ie to find out suddenly???pls give answ if u know?

DIFFERENCE BETWEEN BINDING LANG AND BIND DIR WHEN USING IN SERVICE PGM...when using binding directory service pgm is necessary?

what are the types of errors available in rpg IV or 400.Like decimal data error,sessional error or device error etc...means important error occurings,ie to find out suddenly???pls give answ if u know?Pls give the answer 1,,,,,,,to 12.........ie how it will happened like...for eg if a file is not closiing ,,,like this error is happened... if sufficient data is not in a pf to write in a display file. or sfldsp is not "on"......sessional or device error occured...like this give details all 1 to 12 errors (syam..)....give details PLsssssssssss?

I/o error detected,Record Out of sequence,Permanent I/o error occured....I mean give one eg for these errors...i understand only,update/delete operation without prior read oprn..give details of remaining

how a varible can be passed to a subfile...accnt1 contain data in a data area..ie Daccnt1 uds,Daccnt2 3 overlay(accnt1:1), DNo 4 overlay(accnt1:4)..we want to transfer this dataarea value from acnt0001 to a subfile..that means to enter each record we have to incriment account no,, i normal window we can do move accnt1 account_no eval account_no=accnt1 eval no=no+1 exfmt usr_account how it possible with Subfile????????.Please do answer? (Thank you for all your answers dear friends!!)