In the function window the functions to be calculated are enterred, see also function entry.
Is the flashing caret within a function, then the graph for it can be calculated or updated using the calculate menu or the context menu (right mouse button).
Is the cursor on top of a function, the function value is shown in a tool tip window. The function must be valid for x=0.
Using the view menu the view of the functions can be changed.
For comment lines the first column must hold a blank. Such comment lines can then be formated (Bold, Italic ...).
Is this window selected when print or print preview is selected, the whole window including the inserted windows is printed.
Single function values can be calculated using the ' value calculation' dialog. As long as this dialog is open, on every move of the cursor to another line this line is computed and the result shown in the dialog.