the keymap examplse can not work correctly

with dhtmlx 4 ,the example of key map can not work correctly,

dhtmlx.com/docs/products/dhtmlxG … excel.html

from the docs,http://docs.dhtmlx.com/grid__navigation.html#nativekeymap

it is said:

Activating the MS Excel keymap in the grid

but there is not any dhtmlxgrid.js file in dhtmlx 4, how to make it work in dhtmlx 4?

In dhtmlx 4 there is need to include the separate js files for the components.
all the required js files are included in the dhtmlx.js
Thank you for your report. The documentation will be updated.