> From reading [the RD blog post on this ](https://rubberduckvba.wordpress.com/2019/12/08/document-modules/) I thought the hosts object model was just on an interface with VBA/VBE itself:
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They’re in the VBA project, because the host application decided that’s what’s in a VBA project hosted in – here Excel, but each host application gets to decide whether a project includes a module to represent the host document, and under what circumstances to add or remove other types of modules, like W