As some inputs are identical for several command blocks in the batch file, they are described in advance in this chapter.

• Identification numbers

The data (model and result data) are identified via identification numbers (chapter "Appendix") and, if necessary, via the time step (for transient data). It is not necessary to know the identification number when editing via the user interface. However, if the batch file is created or edited with an editor, the identification number is relevant for the user.

The identification number -99 serves as a flag for calculated data. The conversion flag to other units and the time step are not interpreted (batch command RECH).

• Conversion of data into other units:

Data relating to rates [m³/?/TU] can be converted to other units for the plot by specifying a conversion flag. The question mark within the unit means "per node or element" and TU is the model time unit. The conversion flags are defined as follows:

Groundwater recharge rates (identifier 111) can be converted from [m³/element/TU] to the following (in addition to the conversion described above):

[mm/a] (conversion flag 1) or

[l/s/km²] (conversion flag 2).

The user interface provides corresponding control elements for specifying the unitt.

• Potential heads in the 3D model on the free surface

If potential head lines/surfaces are displayed in a horizontal section through a 3D model, they are not displayed in the currently selected layer but on the free surface if the conversion flag 9 is entered! A checkbox is displayed in the user interface for the corresponding model and plot selection to indicate whether the potential heads should be displayed on the free surface.

• Coordinates instead of node numbers:

For some commands, it is necessary to specify lists of node or element numbers. This applies to:

Definition of a vertical section in a 3D model (VERT),

Definition of hydrograph nodes/elements (GANG),

Definition of isolines/surfaces by nodes (ISOL / FLAE), not possible via the user interface.

The specification of numbers can be replaced by the entry of coordinates.

To do this, the amount of numbers to be read is given a negative sign. Then, instead of the numbers (max. 10 per line), the coordinates (x, y) and - if necessary (e.g. for hydrographs and 3D models) - the layer numbers (no.) are read. One input (x, y and possibly no.) is expected per line, separated by a blank line or tabulator. The nearest node or element centres are then determined for the entered coordinates. For checking purposes, the node or element numbers found are logged together with the distance to the entered coordinates.

Name of the output file, new map in the plot