# Create a MRML Viewer

**URL:** <https://discourse.slicer.org/t/create-a-mrml-viewer/18118>\
**Category:** Development\
**Tags:** slicelet\
**Created:** [June 14, 2021, 3:21pm UTC](https://discourse.slicer.org/t/create-a-mrml-viewer/18118 "2021-06-14T15:21:40Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![bhandarys](https://avatars.discourse-cdn.com/v4/letter/b/90db22/32.png) [@bhandarys](https://discourse.slicer.org/u/bhandarys)\
**Post date:** [June 19, 2021, 10:11am UTC](https://discourse.slicer.org/t/create-a-mrml-viewer/18118/7 "2021-06-19T10:11:49Z")

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Hi Andras,

Yes, that worked. I now need to read up on why they are different.

I am using the SlicerCAT template and trying to make the landing module to be “Volumes”. So I modifed the following lines.

```auto
set(Slicer_DEFAULT_HOME_MODULE "Volumes")
set(Slicer_DEFAULT_FAVORITE_MODULES "Home, Data, Models, Transforms, Markups, SegmentEditor")

```

I even got the following lines during the compilation.

```auto
1>-- Configuring Sudhirs default home module [Volumes]
1>-- Configuring Sudhirs default favorite modules [Homes, Data, Models, Transforms, Markups, SegmentEditor]

```

However when the application opens of the default module is still “Home”. I tried deleting the .ini file based on this [Custom application does not open module at startup - #15 by lassoan](https://discourse.slicer.org/t/custom-application-does-not-open-module-at-startup/4913/15). But that has not changed anything. Can you please guide on what I should look for now.

Thanks a lot for your suggestions and guidance. Really appreciate it.

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