Creo Parametric can be configured in several ways.
The UI can be customized through a creo_parameteric_customization.ui file. But it also has a lot of configuration settings available through the config.pro configuration file
2D drawings have additional configuration settings in the drawing setup file.
Note: these settings are stored in your drawing as well; the drawing setup options are added when the drawing is created.
Here you can find all the config.pro and drawing setup options you need.
Really ALL Creo config options (even the hidden options)
Check your Config.pro file
You can even upload your own config.pro or config.sup and perform various checks on them.
Drawing setup Options
The 2D drawing setup options