When using pagegenerators in other scripts we often meet many pages with nothing to do (but it will be regenerated when the script is rerun). It may be a good idea to have a "skip" or "offset" parameter, e.g. -cat:A -skip:1000 will generate all pages in category A except first 1000 pages.
Usually this is done like -cat:A#Hu or -cat:A -start:Hu (starts on hu* articles and cotinues alphabetically)
This works but is not useful in other types of generators (which is not ordered alphabetically) or there're some reason that something that should be run in batches (using together with -limit) but don't know where to start.