It is important that the description for the type of information is specific to what is being confidentially disclosed. As an example a software company working in the field of transportation systems might say; "The information being disclosed is a concept for passing waybills from carrier to carrier using mobile phone technology". This is by far preferential to saying "The information being to disclosed is information relating to software for transportation carriers". Anyone charged with determining whether confidential information is being disclosed is more able to make the assessment when the description is more specific.
Always use a letter of intent to present your preliminary offer to a seller. This will save you writing time, legal fees, and will be easily read and understood by the seller and any other interested parties who must be made aware of your intention to purchase the subject property.