## Tabpage: Linguistic Variables and Values

This tabpage contains the following controls:

- table of linguistic variables,
- table of linguistic values that belong to the currently selected linguistic variable and
- field for notes on the selected variable.

#### Table of variables

- Name - name of a variable, limited by 255 characters.
- ID - identification string of a variable, limited by 50 characters. Identification string may contain letters of the English alphabet, numerals and character "_" and must be unique within this table.
- Universe - universe of discourse of a variable, i.e., real or linguistic values.
- Dependency - dependency of a variable (independent, dependent, ?).
- Status - status of a variable (known, unknown, ignore).
- Number - grammar number (singular, plural).
- Decimals - number of decimals that should be displayed in any numerical value regarding this variable. This does not affect variables defined on a universe of discourse of linguistic values.
- Check state - is variable checked for further processing?

Context menu with the following functions available is associated with the table of linguistic variables:

- Remove selected linguistic variables - this item is enabled only if one or more variables are selected by clicking onto the row header. Removes the selected variables.
- Remove checked linguistic variables - this item is enabled only if one or more variables are checked. Removes the checked variables.
- Show linguistic values of the selected variable - this item is enabled only if exactly one variable defined on a universe of real values is selected and if it has at least one linguistic value. Shows linguistic values of the selected variable in a graph.

#### Table of linguistic values

- Name - name of a value, limited by 255 characters.
- ID - identification string of a value, limited by 50 characters. Identification string may contain letters of the English alphabet, numerals and character "_" and must be unique within all values of all linguistic variables. First character of the string must not be a number.
- Point A - coordinate of the first point of the trapezoidal fuzzy set representing the linguistic value.
- Point B - coordinate of the second point of the trapezoidal fuzzy set representing the linguistic value.
- Point C - coordinate of the third point of the trapezoidal fuzzy set representing the linguistic value.
- Point D - coordinate of the fourth point of the trapezoidal fuzzy set representing the linguistic value.
- Check state - is the value checked for further processing?

Context menu with the following functions available is associated with the table of linguistic values:

- Remove selected linguistic values - this item is enabled only if one or more linguistic values are selected by clicking onto the row header. Removes the selected linguistic values.
- Remove checked linguistic values - this item is enabled only if one or more linguistic values are checked. Removes the checked linguistic values.

#### Field for notes on the selected linguistic variable

This field contains notes on the selected linguistic variable (limited by 10,000 characters). A context menu with the standard functions (Undo, Copy, Cut, Paste and Select all) is available.