Don't talk about the shell.

This is a man page for the pcap filter expression language; those
expressions might be typed into a command interpreter, or be typed into
a GUI dialog box, or be read from a text file, or be wired into program
source, or....  Leave it up to man pages such as the tcpdump man page to
discuss those issues.

pcap-filter.manmisc.in

@@ -298,7 +298,7 @@ of protocol type \fIprotocol\fP.
 \fBicmp\fP, \fBicmp6\fP, \fBigmp\fP, \fBigrp\fP, \fBpim\fP, \fBah\fP,
 \fBesp\fP, \fBvrrp\fP, \fBudp\fP, or \fBtcp\fP.
 Note that the identifiers \fBtcp\fP, \fBudp\fP, and \fBicmp\fP are also
-keywords and must be escaped via backslash (\\), which is \\\\ in the C-shell.
+keywords and must be escaped via backslash (\\).
 Note that this primitive does not chase the protocol header chain.
 .IP "\fBip6 proto \fIprotocol\fR"
 True if the packet is an IPv6 packet of protocol type \fIprotocol\fP.
@@ -879,8 +879,7 @@ The following TCP flags field values are available: \fBtcp-fin\fP,
 .LP
 Primitives may be combined using:
 .IP
-A parenthesized group of primitives and operators
-(parentheses are special to the Shell and must be escaped).
+A parenthesized group of primitives and operators.
 .IP
 Negation (`\fB!\fP' or `\fBnot\fP').
 .IP