more info about this font:
https://aivi.party/blog/0003?post=Segris_16

Some characters are specifically reserved to improve functionality:

`?` maps to the character with all segments enabled. It can be used to visually represent an LCD panel. That is, you can place a layer containing `??:??` set to a low opacity behind the main layer, `12:34`, for a fake LCD effect.

`!` maps to the character with all `.`, `:`, and `’` enabled. Similar to `?`, it can sit behind the main layer for an LCD effect. 

The space character is the exact same width as the `.`, `:`, and `’` characters. You can alternate between a blank space and `:` for a blinking time separator.

Three spaces is the same width as one number or letter.