As explained in Compulsory Data Category Keyword, the user should enter 'NONE' for the data category keyword, if the information contained in the data category is not relevant to his application. Then simply omit the rest of the data category. This is quite common when running Aqwa programs.

Some data categories cannot be meaningfully omitted, for example, Data Categories 1, 2, 3 and 4 in a Stage 1 analysis. (If the user does enter 'NONE' for the data category keyword, error messages will be issued saying that the data is missing.)

The user should note that whenever 'NONE' is entered, the program will automatically supply default values for all the quantities associated with that data category. The user may therefore use this mechanism as a default facility (but see Default Values below).