all second-level commands in block > PARAMETER or > OBSERVATION referring to source names.
all fourth-level commands in block > PARAMETER or > OBSERVATION, respectively
This command reads one or more sink/source code names (TOUGH2 variable SOURCE) or element names associated with a sink or source (TOUGH2 variable ELEG) as specified in the TOUGH2 block GENER. Both parameter and observations may refer to sources. Sources and source elements are designated by a three-character/two-Sources (FORTRAN format: AAAII) code name. Blanks in the names as printed in the TOUGH2 output file must be replaced by underscores (e.g., a source or element name specified in the TOUGH2 input file as 'B_007' is printed as 'B_0_7' in the TOUGH2 output file. Therefore, it must be addressed in the iTOUGH2 input file as 'B_0_7'). Multiple names can be specified. A sequence of iplus elements can be generated by increasing the number found in substring [islotb-islote] (default: [4,last]) of the last sink/source/element. The following two command lines are identical:
>> determine ENTHALPY of injected fluid...
>>> SOURCE: WEL_1
<< ... based on...
>> ... the total VAPOR PRODUCTION in the extraction wells
>>> SINK : EXT_1 + 3
>>>> DATA on FILE : steam.dat
>>>> RELATIVE error: 10 %