What you can’t do (yet)

• You can’t set the “press to use” text. The game rewrites it every frame for whatever the player is standing at, so your text would be overwritten at once. (This is UseText. It is rewritten every frame by the interactable under the player.)
• You can’t show the tooltips for items and task items. ShowTooltip and HideTooltip only show your own title and text. The game fills its item and task item tooltips from the item data. (ShowTooltip and HideTooltip call ToolTip.Activate(string, string) and Deactivate(). Item tooltips use ToolTip.Activate(ItemData, ...) and task-item tooltips use ToolTip.Activate(TaskItem). The framework offers neither.)
• You can’t use the card game’s tutorial messages. They belong to a card table and mean nothing outside a card game. (This is TutorialMessageManager, a card-game tutorial queue bound to a card table.)