The /DEFINE GROUP REGION/ packet is used for defining groups by the country, state, and county codes in the inventory. The packet contains the following entries.

The /DEFINE SUBGRID/ packet is used for defining subdomains based on cell numbers from the full grid being applied using the gridding matrices. The packet contains the following entries.

Group labels, denoted above by <Label>, are used to name a group for identification when creating a report in the Create-report section. The text appearing in the placeholder <Label> can be any alphanumeric combination of characters up to 200 characters, including intervening blanks. The text string (less trailing blanks) that occurs after /DEFINE .../ and before a comment (indicated with ##), is treated as the group label. References to the group label in the Create-report section do not have to be consistent in the case of the text; SMOKE will ignore the case of the text, treating lower- and uppercase characters as if they were the same.

The INCLUDE and EXCLUDE instructions are used for defining the meaning of the entries in the packet. If the INCLUDE instruction appears, then Smkreport interprets the subsequent entries in the packet as identifying records to include in the output report(s). On the other hand, if the EXCLUDE instruction appears, then Smkreport interprets the subsequent entries in the packet as identifying records to exclude from the output report(s). The INCLUDE and EXCLUDE instructions may appear in both the /DEFINE GROUP REGION/ and /DEFINE SUBGRID/ packets. These instructions act as toggle switches, and Smkreport will give a warning if a county previously included is later excluded. All packet entries after an instruction will be interpreted according to the instruction, until another instruction is given, or until the packet ends. The INCLUDE instruction is the default, so if neither instruction is given, SMOKE will assume that the records in the packet are those to be only in the report.

The ordering of INCLUDE or EXCLUDE instructions in a group definition can change the meaning of the group definition. If INCLUDE is given first, Smkreport will initialize the group to exclude all grid cells and then proceed with interpreting the instructions. On the other hand, if EXCLUDE is given first, Smkreport will initialize the group to include all grid cells. Here is an example for a small 6-cell by 6-cell grid, which shows how the order of the INCLUDE and EXCLUDE statements changes the meaning of a group definition.

If the instructions are

/DEFINE SUBGRID/ Example subgrid
    INCLUDE
      (2,2) TO (6,6)
    EXCLUDE 
      (3,3) TO (5,5)
    INCLUDE 
      (4,4) TO (4,4)
/END/

then the following cells (shown in gray) will be selected:

If the instructions were rearranged to have the EXCLUDE statement first, then the initialized status for all cells would be INCLUDE. The additional INCLUDE statements are therefore unneeded, and the definition of the group changes to the following:

As noted above, the REPCONFIG file currently can have only two possible groups in the Define-group section (regions and subgrids) In the future, other types of groups could be permitted if a need for them is identified: