_PROPERNOUNS — Returns the number of proper nouns in the last file processed by WORDS.

Syntax:
%_PROPERNOUNS

Counting proper nouns requires WORDS to build a vocabulary list for each file. If you disable this step with /U:0 or /U:2, the list will not be available and 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, or if there was any error reading the last file, this variable returns the value N/A.