-
Means Back Some Lines, Minus or Range (in Regexp)
Minus (-) means back a relative number of lines.
/list *-20/
Minus in the Visual home line means roll back a number of lines.
===>-10 {roll back 10 lines}
Minus in the calculator means subtract (e.g., =1010-40).
Minus (-) in a character class within regular expressions indicates a range of characters. It takes on this meaning if it appears between two other characters. If it appears at the beginning or end of the class, it is used as a literal.
/list "[a-z]" (regexp) {range of lowercase letters}
/list "[-az]" (regexp) {character class “-,” “a” and “z”