svn checkout via shell script

Very often development servers only have self-signed certificate for ssl connection. I've recently had to create a script that would checkout from a https svn repository that would fail with "Server certificate verification failed: issuer is not trusted..." . Below is a workaround used to temporarily trust the certificate.

svn --username $SVN_USER --password $SVN_PASS --no-auth-cache checkout ${REPO_URL}/${REPO_PATH} $REPO_PATH <<EOF 2>/dev/null


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temporarily trust certificate

Temporarily trust the certificate on prompt.

meaning of char 't' in between

can you explain why do you have 't' before EOF?