Height-In-Cells
This style implies that the value specified for the Lines property, the one setting the Web-Browser control’s height, is expressed in CELLS. It is possible to get the same result writing: "Lines value CELLS".
 
Example - Define a web-browser control with height and width in cells using the styles
screen section.
...
  03 screen-1-wb-1 Web-Browser
     line 23.9
     column 2.2
     size 62.2 
     lines 25.6 
     id 15
     height-in-cells
     width-in-cells
     value "https://www.veryant.com"
     .