I see there are a few users who are service oriented businesses and a feature you have in Manager might be able to be expanded to make repetitive text entry for common jobs or descriptions in invoices in particular even better. I found a Thunderbird (email) add on that does what I am referring to. It is called QuickText and have been using this for several years now, (and now could not be without it).
I see the Notes feature in Sales Invoicing currently has one default notes option, and I could use a system similar to Quicktext to select one of many common Notes, for example I do a dozen or so different regular jobs, with common descriptions - some quite long winded, and having a menu bar of common notes would be a terrific time saver and I gather many users would find a use for it too, even if it has little to do with servicing tasks, but might have use in repetitive courier instructions, special banking or even packaging for internal staff.
If required, I can do a screen shot of my email menu of quick text headings and post it up if you are not familiar with QuickText or have not used it (and or Thunderbird).