90Expanded programs6.1.2.4 Enter variables1. Mark the Variables row in the data overview.2. Press Edit.3. Select the variable to be edited.4. Press Edit and enter the data (refer to process specification)(for F1, F2, λ1, U1 etc.)5. Press OK to confirm each entry.Abbreviation of Variables:F1: Factor 1F2: Factor 2λ 1: Wavelength 1U1: Conversion Factor 1 for the first chemical formU2: Conversion Factor 2 for an additional chemical form etc.6.1.2.5 Save a free programming user program1. Press Store to save the entered data.The data can be stored under any data point (measurementsequence, formula, timer, etc.).6.1.3 Select a user program1. Press User Programs in the Main Menu.An alphabetical list of user programs with program numbersis displayed.Note: Use the scroll bar to scroll through the list quickly.Note: Highlight the selection by pressing it or Select by Number tosearch for the program by number.2. Press Start to run the program.6.1.4 Add, edit and delete user programs from the favorites listThe most frequently used tests/methods in the "User Programs"menu can also be added to the list of favorites to simplify theirselection.