User settings in the .flatland directory - modelint/flatland-model-diagram-editor GitHub Wiki
All user customization is managed in a .flatland folder in the user's home directory.
You can create this directory yourself or use the -CF option on the command line to have it created for you if it doesn't already exist. See the -CF option for more details.
The .flatland folder currently supports two subfolders: config and images
This folder contains any .yaml files that the user can customize according to the header comments and examples in each file. For now, the only supported feature is color.yaml. The user can specify their own RGB values for canvas backgrounds. More features to come!
This folder contains any .png or .jpeg files that the user wants placed in their frame layer just underneath the diagram layer. This is how you can display your organization logo, boilerplate open source license and/or logos, etc.