the keymap examplse can not work correctly

with dhtmlx 4 ,the example of key map can not work correctly, … excel.html

from the docs,

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
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