To export the displayed isotopic pattern to an image, use
-> .Available formats are SVG, EPS, PS, PDF, and the formats with write support in GdkPixbuf.
To choose a format, you can use an appropriate extension in the file name, or explicitly select a format in the combo box. With the first method, if GChemCalc does not recognize an extension, the exported file will be a SVG file. GChemCalc will add an extension to the file name if needed.
You might change the default width and height of the exported image using the appropriate entries.
Postscript and PDF files can also be produced using the . -> command