Windows Batch Open textfiles and delays

Open textfiles and wirte in there with a delay

@echo off

echo. 2>file.txt
echo. 2>file2.txt
echo. 2>file3.txt
echo. 2>file4.txt

start file.txt
echo You > file.txt
ping localhost -n 2 > nul
start file2.txt
echo have just > file2.txt
ping localhost -n 2 > nul
start file3.txt
echo opened > file3.txt
ping localhost -n 2 > nul
start file4.txt
echo four textfiles > file4.txt

exit