if you would like to abort current command and continue to the next one - just use "return" statement - as a result workflow will be "green" and it will continue to the next command
if you would like to abort current command and workflow - just throw an exception (throw "user created message") - as a result workflow will be "red" and you will see "user created message" in error box of monitoring screen
Where does one actually go withing hte interface to issue the return statement once the workflow is executing? I am stuck in an "aborting" state for several workflows with no apparted option to clear this. There are no reserveations remaining related to these workflows to release. Just stuck.