: Store your macros in a directory included in the PMLLIB or PMLUI environment variables so E3D can find them automatically.

Place the file in your E3D project directory (or a folder defined in your PMLLIB path). In the E3D command line, type: MACRO create_column

Determine the maximum extent of a gas cloud for a leak from a specific pipe segment under 12 different wind directions.

You’ve just automated 15 manual steps.