This vim plugin provides basic syntax highlighting for opsiscript (https://opsi.org). It is (probably) neither perfect nor complete.
If you don't already have a plugin manager you can use this by cloning the
repository to ~/.vim/pack/plugins/start/ (all plugins in start will be
automatically loaded at startup):
mkdir -p ~/.vim/pack/plugins/start/
git clone https://github.com/janheini/opsi-syntax.vim \
~/.vim/pack/plugins/start/opsi-syntax.vim