How to use special characters inside code block

Question

many characters break the code block, while viewing the same on github looks OK without any error....

example, try to render this :

move the new part when needed
```
@echo off
::example of filename Test_1.dat / Test_2.dat etc.
set file="Test_*.dat"
set dest="E:\INPUTDATA\LOAD\"
set src="E:\files_for_load\"
set inprogress="E:\INPUTDATA\INPROGRESS\*.dat"

:hi
if exist %dest%%file% (
    echo file exists, files INPROGRESS now
    dir %inprogress%  /s/b
) ELSE (
    echo file not exists
    for %%a in (%src%%file%) do (
        echo %%a
        move %%a %dest%
        goto hi
    )
goto hend
)

timeout /t 30

goto hi

:hend
echo All the files processed!
pause
```

any solution ?