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+======Overview:======
+before(//count// //chars// //text//)
+======Technical:======
+The before() function returns the part of //text// before the //count//th instance of any of the characters in //chars//.
+The //chars// argument may contain multiple characters.  If it contains a space, you should surround it with double quotes (which won't count).
+If //text// does not contain //count// instances of any of the characters in //chars//, or if //count// is 0, then it returns the empty string.
+If //count// is a negative number, the characters are counted from the end of the string.
+======Defined Behaviors:======
+^ Call ^ Return Value ^ Because ^
+| before(1 ! hop!user@host)         | hop | |
+| before(1 / /usr/local/bin/epic)   | the empty string | (there is nothing before the first /)|
+| before(-1 / /usr/local/bin/epic)  | /usr/local/bin | |
+| before(-2 / /usr/local/bin/epic)  | /usr/local |
+| before(5 / /usr/local/bin/epic)   | the empty string | (there are not 5 /'s in the string)|
+| before(/ /usr/local/bin/epic)     | the empty string | (//count// defaults to 1) |
+| before(0 ! hop!user@host)         | the empty string | (the //count// argument is 0)|
+| before(1 @ /usr/local/bin/epic)   | the empty string | (there is not 1 @'s in the string)|
+| before(/usr/local/bin/epic)       | the empty string | (argument error -- there are not enough words)|
+| before()                          | the empty string | (no params) |
+======History:======
+This function first appeared in "+10" (post ircII, pre-EPIC).
+Support for the <count> argument first appeared in "+11"