The meaning of those 2 properties is different. "Description" should
be used to enter a short (one or two sentences) description of a document.
"Comments" should be used to enter miscellaneous information concerning the
document. All the information that can not take place in any other field or
property should be considered as "comment".
Comments should take place in the « right »group of a form as a small text
area field. Description should take place in the « center »group as a large
text area field.