Thanks for the reply. QUESTION A : In PHP I usually create a file 'functions.php' where inside there are all the functions. From 'main.php' for example i call a function that is declared inside 'functions.php'. So, for you, i could create a main file called 'main.pl' where there is the basic structure .. and put some functions in this case subroutines in another file called 'oths.pl'. Then, should i include the 'oth.pl' file into main.pl as a module, with require ? Then, from main.pl :

&function();
[download]

having in oth.pl

sub function() {
# do something
}
[download]

will that work ? If yes, do you know some paper or somewhere where i could i find some example of a 'multi file' software in perl ? QUESTION B: gotcha, thanks. Thank you. Gio

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