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+# $EPIC: strip.txt,v 1.3 2007/03/02 02:32:04 jnelson Exp $
+======Synopsis:======
+$__strip__(<chars> <text>) \\
+$__pass__(<chars> <text>)
+======Technical:======
+   * The <chars> argument is a [[what is a word|dword]].  This is different than most functions.
+   * If the <text> argument is omitted the empty string is returned.
+   * The return value for $strip() is a copy of <text> from which every instance of any character in <chars> has been removed.
+   * The return value for $pass() is a copy of <text> from which every instance of any character not in <chars> has been removed.
+======Practical:======
+These functions can be useful to remove dangerous or unwanted
+characters from a text string.
+======Returns:======
+$strip(): <text> with all of the characters in <chars> removed. \\
+$pass(): <text> with all of the characters not in <chars> removed.
+======Examples:======
+<file>
+$strip(aeoiu hello there)            returns "hll thr"
+$pass(aeoiu hello there)             returns "eoee"
+</file>
+======History:======
+This function originally appeared in ircII-2.1.5