[FEATURE] Explicit visual indicators for field nullability, comments and other key configurations

[incompletude]

It would be nice if DrawDB had a design goal to always be explicit.

Is your feature request related to a problem? Please describe:

It's not efficient to hover over fields to check if they are nullable or properly commented.

Describe the solution you'd like:

For nullability, required fields could be displayed in bold or with an icon. For comments, an icon could provide the option to display the full text. It would also be nice to have these features in the settings menu, so they can be turned off for printing purposes.