Acme - Beyond the pipe operator
The Acme editor from plan9 has a pipe-ish operator that allows you to send selections in your windows to a Unix/Plan9 command and replaces the contents with the output from that command. What if you don't want to destroy your selection and instead use the command as a filter for other purposes? Also, how can I get the output from a command to put information into my file? This video attempts to cover the other two redirection operators and how they might be used.