The heredoc syntax is a much cleaner way (useful) to work with multi-line strings and avoid quoting issues. They are a great alternative to quoted strings because of increased readability and maintainability. You don't have to escape quotes and (good) IDEs or text editors will use the proper syntax highlighting.
A very common example: echoing out HTML from within PHP:
Thanks i thought it was a heredoc. Just wanted to make sure Made the change easy. Just added the admin only statement for open/close forum to each item in the dashboard template required. I hated doing that but that is what was requested.
keep "customization notes" for each client, the same way we keep changelogs. it makes it easier to find what was changed and when. then review the notes when upgrading or troubleshooting for anything that your changes may break.
a good plan is to also submit these customization notes with your invoice to the client.