What are these automatic tables?

[rc-alex]

Hello,

I have a database, and at some point Access has added a bunch of tables:
MySysAccessStorage
MySysXML
MySysACEs
MySysComplexColumns
MySysNameMap
MySysNavPaneCategories
MySysNavPaneGroups
MySysNavPaneGroupToObjects
MySysNavPaneObjectIDs
MySysObjects
MySysQueries
MySysRelationships
MySysResources

Some of these are fairly large, but I'm not sure what they are, what they do, and what I need to do about them. Are they a problem?

Thanks.

 

[RuralGuy]

They are Access System tables needed for Access to keep track of what you are doing. They are usually marked Hidden so they do not get in your way.