Batch file new line in string

In a batch file, you can create a new line in a string using the following methods:

Carriage Return and Line Feed (CR+LF): You can use the following syntax to create a new line:
```
set myString=myValue^&^&echo.
```
The ^& is used to escape the & character, which is used to concatenate strings. The echo. is used to insert a new line.
Using the echo. command: You can use the following syntax to create a new line:
```
set myString=myValue
echo.
```
The echo. command will insert a new line.
Using the set /p command: You can use the following syntax to create a new line:
```
set /p myString=myValue
```
The set /p command will prompt the user to enter a value, and the new line will be inserted automatically.
Using the echo. command with a variable: You can use the following syntax to create a new line:
```
set myString=myValue
echo.%myString%^&^&echo.
```
The %myString% is used to expand the variable, and the ^& is used to escape the & character.

Here is an example of how you can use these methods:

@echo off
set myString=myValue
echo.%myString%^&^&echo.
pause

This will output:

myValue

And then pause the batch file.

You can also use the set /a command to create a new line:

@echo off
set /a myString=myValue
echo.%myString%^&^&echo.
pause

This will also output:

myValue

And then pause the batch file.

Note that the set /a command is used to perform arithmetic operations, but it can also be used to create a new line.