Binary files a/docs/signatures.pdf and b/docs/signatures.pdf differ

@@ -331,7 +331,12 @@ How do I look in hex?

     as two sub-signatures \verb+aabbcc+ and \verb+bbaacc+ with any number

     of bytes between them. It's a requirement that each sub-signature

     includes a block of two static characters somewhere in its body.

-    

+    Note that there is one exception to this restriction; that is when

+    the range wildcard is of the form \verb+{n}+ with \verb+n<128+. In this

+    case, ClamAV uses an optimization and translates \verb+{n}+ to the string

+    consisting of \verb+n ??+ character wildcards. Character wildcards do not

+    divide hex signatures into two parts and so the two static character

+    requirement does not apply.

     \subsubsection{Character classes}

     ClamAV supports the following character classes for hex-signatures: