ServiceNow Blog

 ServiceNow .list verses .LIST when entering .list and .LIST in the left hand navigation compare the results: incident.list:  url generated is unchanged, but results are rendered in nav_to.do format with the left hand navigation intact incident.LIST:  url generated is /now/nav/ui/classic/params/target/incident_list.do left hand navigation is removed

Comparing changes between script versions, e.g. business rule on the business rule, you can use the history> calendar option to compare entries: there you can identify parts of the script that were changed (ServiceNow )

 ServiceNow GlideRecord Performance Pitfalls https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0826993 (ServiceNow)