Document batch variable usage with colon values

[Codex]

Batch users asked how to store values containing : (e.g., “sai às 15:30”) without breaking scripts.

• Guidance: Added README section showing safe set usage with quotes to keep colons and avoid unintended spaces.
• Examples: Included snippet capturing the current time with colon, echoing messages, escaping leading colons, and stripping colons when needed.

@echo off
setlocal
set "mensagem=Saí às 15:30"
set "horario=%time:~0,5%"
echo %mensagem%
echo Horário atual: %horario%
endlocal

Original prompt

sobre o batch script teria como colocar : em uma variável?

ex: sai às 15:30