#
IsoSource Help

# Entering your own data

Entering your own data is not very difficult. The field that is currently active for data entry is highlighted in red. This is intended to make it quicker to spot when entering data.
In addition to manually selecting the current field by clicking on it with the mouse, the program also supports the use of several keys to aid in navigation, they are: [Tab], [Shift][Tab] and [Enter]. The [Tab] key, or [Enter] key moves to the next data field, while the [Shift][Tab] key moves back one data field..
The program has a set tab order which determines the flow of data entry.

## The following screens illustrate this order

Remember the current data entry field is highlighted in red.
1) Title
2) Increment
3) Tolerance
4) Isotope Labels (processed from left to right)
5) Mixture isotopic values (processed from left to right)
6) Source labels (processed from top to bottom)
7) Source isotopic data (processed one column at a time, starting at the top and going to the bottom).

## Saving your Data Set

Select [File] from the menu bar
Enter the name of the file to save in the box next to the "FILENAME:" label, or select a previously entered name.
Then press the [Save] button

## Appropriate Data Field Values for each field

Field Name | Valid Values
Title | Any alpha, numeric or special character.
Increment | Integer values 1 – 100 percent.
Tolerance | .00001 to … The larger the tolerance the more values will be accepted.
Isotope Labels | Alpha, numeric, and special characters with no restrictions. Label will be centered when displayed
Mixtures | Positive, or negative numeric value for each Isotope
Source Labels | Positive, or negative numeric value for each Isotope
Source Labels | Alpha, numeric, and special characters with no restrictions. Label will be right justified when displayed.
Data Values | Positive, or negative numeric values for each Isotope and Source combination.