The mod number, or simply "mod", is an optional 12-digit string that encodes various display settings.
In short, the first 9 digits are incremental values from 0-9, and the last 3 digits encode the states of 9 binary bits in decimal.
These display settings interact in interesting ways, exposing a huge range of aesthetic choices, making it so that any seed number can be visually striking, regardless of its natural appearance.
The mod number does not affect the base seed number's essential numerical properties.
Modding a seed
The mod number is included after the base seed number, preceded by a "." delimiter.
The 5 ranged modifications each correspond to a unique segment of the mod number, collectively making up the first 9 digits of the 12-digit mod number.