describe-property-list
describe-property-list is a compiled Lisp function in `descr-text.el
'.
(describe-property-list PROPERTIES)
Insert a description of PROPERTIES in the current buffer.
PROPERTIES should be a list of overlay or text properties.
The `category', `face' and `font-lock-face' properties are made
into help buttons that call `describe-text-category' or
`describe-face' when pushed.