_PROPERNOUNSALL — Returns the number of proper nouns in all files processed by the last call to WORDS.

Syntax:
%_PROPERNOUNSALL

Counting proper nouns in all files requires WORDS to build a vocabulary list for all files processed; this list is not built by default. Unless you enable the omnibus vocabulary list with /U:2 or /U:3, this variable will return the value N/A.

For the purposes of this plugin, a ‘proper noun’ is any word which never appears in an all-lowercase form. If the WORDS command has not been called, this variable returns the value N/A.