This example explains the use of data-inc and data-dec attributes.
They both take the integer values and responds in pixels just like any other attibute that takes integers. data-inc is used for increasing the final height resulted from the use of other attributes while data-dec decreases
it. Example in this page shows the use of data-inc to increase the minimum screen height adding a value of 50 pixels. Even when resize occurs the increment will be noted. This page is not set as display of grid to explain better.
At full screen, this page is not expected to have a scroll (unless padding is added), it however has a scroll because the resulting screen height has been increased by 50 pixels.
data-height="full"
data-resize="resize" and
data-inc="50"