- The default ignores hidden files, those that start with a period or
- hyphen‐minus, and those which contain a pipe, buck, percent,
- bracket, hash, asterisk, eroteme, semi, or colon.
+ The default ignores files that start with a period or hyphen‐minus
+ and those which contain a hash, buck, percent, asterisk, colon,
+ semi, eroteme, bracket, backslash, or pipe.
+
+- **`EXTRAFINDRULES`:**
+ The value of this variable is appended to `FINDRULES` by default, to
+ enable additional rules without overriding the existing ones.