Because newsletter templates are available in all variety of lengths and sizes, there is really no limit to the content that you could potentially write. Keep in mind, however, that you should probably keep down your word count to a level that people are comfortable reading. While you may think everything that you are spouting off is fascinating, it's helpful to first sit down and make an outline of what you want your main message to be, or what the major news is that you are trying to share.
There is a generic template that is available for all types of businesses. To make a business plan template, you need to modify the standard template that is suitable for your industry and business. The style of writing, the overall organization and the presentation of the ideas is what makes a good business plan template. Creating a template involves a significant amount of research, re_thinking and planning. Detailed notes regarding the sources of information and the underlying assumptions that support the financial data and information must be kept carefully for quick and easy reference as and when needed.