Underground-specialised Maps have certain defaults that can be set and modified.

The software can be set to add Underground-specialised Map tracks to the Analysis Timeline; there’s a choice of absolute or relative 15 and 60-minute intervals; default Map sizes and image format can be set for the Save Map events.

To set Underground-specialised Map options:

1. Select Tools > Options > Analysis Options.
   
2. Check the box labelled "Add underground-specialised timeline tracks to new Analysis projects". This ensures that all projects have relevant Underground Map tracks on the Analysis Timeline.
3. For the option "Timing for 15-minute interval events", select one of the two options:
   • Absolute – this will set the intervals at 15, 30, 45 minutes past the hour.
   • Relative to model start time – this will set intervals at periods relative to the runtime of the model (so, for example, if a model begins at 13:05, the first 15-minute interval will expire at 13:20).
4. Select a "Default image size for map saves".
   • The initial default is 1920 x 1080.
   • Initial default dimensions can be restored at any time by clicking the "Restore default sizes" button.
5. Select a "Default image format for maps" from the drop-down list. Options are:
   • Windows Bitmap (.BMP)
   • JPEG (.JPG)
   • Portable Network Graphics (.PNG)
     Note: The initial default is Windows Bitmap (.BMP) as this is a pure lossless format with no compression.
6. Click Apply to save settings (but keep the dialog open) or click OK to save settings and close the dialog.