syntax extension

*To*: mathgroup at smc.vnet.net*Subject*: [mg106427] syntax extension*From*: Richard Fateman <fateman at cs.berkeley.edu>*Date*: Tue, 12 Jan 2010 04:49:16 -0500 (EST)

Is there a neat way to create a new symbol, say /!. so that expression /. BetterRules[rules] could be written as expression /!. rules I do not find writing something like (expression) ~BR~ (rules) to be quite adequate, especially with the extra parentheses. RJF

**Follow-Ups**:**Re: syntax extension***From:*Jaebum Jung <jaebum@wolfram.com>