Line Break in T-SQL

Hello,

In a Stored Proc, I am building a string variable. I am getting outputs
from 4 different queries and would like the string to have line breaks
to display each entry in a different line in a text area. How can I do
this?

i.e
result = result1 + result2 + result3 + result4.
What characters can I enter so that the output is displayed in the
textarea as
result1
result2
result3
result4

Thanks,

.