Osmosis supports a series of template variables, which allow you to re-use your proposals. Each template variable is written like so: {client-name}.
When you press { in the editor, a list of variables will appear. As you type, the list will be filtered to match what you’ve typed:
Just above the editor you can see a link to view all available template variables:
The full list of values allow you to use extensive client contact information in the proposal: