Invisible block

Certain blocks in the game are designed to be invisible:

Visibility
Invisible blocks are intended to never be directly visible to those not directly manipulating them, due to being intended for mapmaking and other such purposes. Despite this, there are cases where they can actually be seen, directly contradicting their intended invisibility.

Other invisible blocks
The following blocks can also be invisible under certain circumstances:


 * , if all states false
 * , if all states false
 * , if all states false