"Send e-mail"generates two files: a PDF file containing all the calculation results and a ZIP file with drawings and 3D model, and sends these files to the mail you specified when registering on the website.
The "help"tabis activated by pressing the button
Displays reference material related to calculator: description, tables, images.
Tab Widget, activated by clicking
Contains promotional material for installation of the widget calculator to your site.
Button Widget is only available on the calculator page on the website https://kalk.pro