There are many times where you want to know what environment variables are set to in Calibre Interactive. This is especially true when preparing a testcase to send to someone else. The transcript is the perfect place to capture this information.
To output the run environment Calibre is running in and capture the variables set inside Calibre Interactive, use a pre-trigger.
Use Setup -> Preferences -> Triggers -> Calibre Pre-Execution Trigger. Enter the Shell command "env". This will add a list of environment variables and thier settings to the top of the transcript in Calibre Interactive.