When items of the presentation already exist, they are listed in the dialog window. In case of a frame, a rectangle, or a ellipse its position and size is shown; in case of an array the name of the data file as well as the column indices of x and y values, in case of a function the names of the shared library and the function, in case of a parametric function the names of the shared libraries and the functions for x(t) and y(t), in case of a legend the number of the marker or line, and in case of a text, a line, or an arrow its position and direction. When the dialog is left open, it will reflect changes in the item list.
In the tree view frames are displayed one hierarchical level higher than the other item types. Other items following a frame are to be plotted in that frame. The sequence of items belonging to a frame ends when another frame item follows. Items not belonging to a frame, that is, items not following a frame item, will be plotted without a frame. Function and data set values then will be interpreted as cms. The position of the selected item can be changed using the up and down arrow buttons left to the tree view.
Each item is preceeded by a checkbox, displaying its activation state. Activated items are shown in the plot, deactivated items are hidden. The state can be toggled by clicking an item with the left mouse button, by pressing the space bar after selecting an item with the cursor keys, or by the itemīs context menu, which pops up when an item is clicked with the right mouse button. An item can be selected without changing its activation state by clicking it with the right mouse button, or by use of the cursor keys.
For appending a new item to the list, the button New opens the dialog New Item, where the type of the item is to be chosen.
The button Edit opens the according dialog for the setting of the item selected from the list. Editing can also be selected from a context menu, which pops up when an item is clicked with the right mouse button. Double clicking of an item in the list enters the edit mode, too.
The button Fit changes the selection mode of the item list by a first click to allow multiselection of items. Then you are asked (by a text displayed in a tooltip rectangle) to select an equal number of function items and array items. A second click then opens the dialog Parameter fit for performing a (multidimensional) parameter fit of the chosen function(s) to the data set(s) of the chosen array item(s). Then the first selected function item in the list corresponds to the first selected array item in the list and so on.
When the item list contains exactly one function and one array item, no multiselection is necessary and the dialog is opened already by the first click to perform parameter fit in one dimension.
By using the button Delete the chosen item may be deleted. Deleting of an item can also be selected from its context menu.
The button Copy is used to place a copy of the chosen item at the end of the list. Copying of an item can also be selected from the its context menu.
The dialog is closed by using the button Close. The dialog can be left open during work with Kpl.