The function exports the Water and Sewer project to a GT file.
Run the function from the following location:

The following method is used:
- Step 1 : Start the function.
- Step 2 : Select trenches in the dialogue. Use Ctrl+left click to add more trenches.
- Step 3 : Select reference alignment from Quadri.
- Step 4 : Save the file in a suitable folder.
- Step 5 : End with OK.