set_timeout/3 not anymore documented, its status?

[Jean-Luc-Picard-2021]

If I check out this here, I don't find set_timeout/3 anymore documented:

Operating System Interaction http://tau-prolog.org/documentation#os

On the other hand this still worked for me:

:- use_module(library(os)).
call_later(G, T) :-
   set_timeout(T, G, _).

Whats its status, is it somehow deprecated?

[Jean-Luc-Picard-2021]

There is also a snake example, still using set_timeout/3:

Snake game in Prolog http://tau-prolog.org/examples/snake

And set_timeout/3 is mentioned here:

Web development with Tau Prolog José A. Riaza - June 13, 2022 https://biblioteca.sistedes.es/submissions/descargas/2022/PROLE/2022-PROLE-006.pdf

Is the snake example deprecated? Memory problems because of set_timeout/3. Strangely in the browser the browser shows a backtrace of a repeated set_timeout/3 call, where and how does

it store this backtrace? Does this mean the snake example might abort sooner or later?