There are two main ways to save a file, either via the "File" menu item, or by clicking on the Diskette icon in the list of icons. If you've just created the drawing you're working on, and haven't saved it yet, you will be taken taken to a dialog where you can choose a name. This will happen regardless of which of the two methods you choose.

If the file already has a name, it will be used unless you select the menu item "Save As". You should ALWAYS use the file extension .kil. This is the only way to ensure that Kontour doesn't run into problems when it tries to find the file again.
Just as in saving files, there are two ways to load them. You can click on the corresponding icon from the list, or you can use the "Open" item from the "File" menu. Either way brings you to the "Open" dialog.

Since this dialog form conforms to the KDE standard, we won't go into the workings of every button. If you've selected the file you want to open a preview appears on the right side of the dialog box. Now you can load it by double-clicking the file name, or by clicking on the "OK" button.
Regrettably, perhaps, one measure of a program's worth seems to be how many other programs' formats it supports. This does, however, afford a degree of flexibility to a piece of software; such import and export filters are necessary. Kontour can import a number of file formats:
Importing objects into a Kontour drawing doesn't work quite the same for all formats, unfortunately. You will find most of the import filters in the "Edit" menu under "Insert". The submenu item "Clipart" lets you insert .wmf files.The filters for pixel-oriented images are under the submenu item "Bitmap". To import XFig drawings or another Kontour drawing, you have to use the "Import" item from the "File" menu. Dialogs are similar to those for opening files.