Err, I was actually talking about the thread subject, where he actually has the word "{in,}equalities", short for "inequalities and equalities" (more or less). AFAIK, that's unix notation.

On Tue, Mar 3, 2009 at 12:36 PM, Brandon S. Allbery KF8NH <allbery@ece.cmu.edu> wrote:
On 2009 Mar 3, at 12:25, Andrew Wagner wrote:
Not to hijack the thread, but I thought I was the only one that used unix notation for statements like {in,}equalities. I like it!

It's actually closer to Windows notation with the bracket on both sides (and I actually considered making it %<% but to me that looks more cluttered, plus the S-curve in $ can be a mnemonic for "symbolic" for those who don't live their lives on Unix).

-- 
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery@kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery@ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH