# Operate on Multiple Instances of JPL

**URL:** <https://swi-prolog.discourse.group/t/operate-on-multiple-instances-of-jpl/3406>\
**Category:** Data Structure\
**Tags:** how-to\
**Created:** [December 21, 2020, 12:42pm UTC](https://swi-prolog.discourse.group/t/operate-on-multiple-instances-of-jpl/3406 "2020-12-21T12:42:47Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![TramsWang](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/tramswang/32/3147_2.png) [@TramsWang](https://swi-prolog.discourse.group/u/TramsWang)\
**Post date:** [December 22, 2020, 1:12pm UTC](https://swi-prolog.discourse.group/t/operate-on-multiple-instances-of-jpl/3406/3 "2020-12-22T13:12:50Z")

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Thanks Jan!  
I just found this topic about [modules](https://swi-prolog.discourse.group/t/properties-of-modules-and-predicates/2597) in the forum. Hope others who encounter the same problem may find entrance here 🙂

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