In WPF, grid cells are editable whenever the ReadOnlyExpression does not evaluate to false.

In AngularJS, grid cells are editable only when given a tagged value Editable=true

The tagged value is set on the Nesting that holds the grid columns - grid columns then adhere to the ReadOnlyExpression.

<a href="/File:2016-12-12_13h07_11.png" class="image" data-bs-title="File:2016-12-12_13h07_11.png" data-bs-filetimestamp="20161212121022"><img alt="2016-12-12 13h07 11.png" src="/images/thumb/1/1e/2016-12-12_13h07_11.png/641px-2016-12-12_13h07_11.png" decoding="async" width="641" height="285" class="thumbimage" srcset="/images/thumb/1/1e/2016-12-12_13h07_11.png/962px-2016-12-12_13h07_11.png 1.5x, /images/1/1e/2016-12-12_13h07_11.png 2x" /></a>

<a href="/File:2016-12-12_13h07_11.png" class="internal" title="Enlarge"></a>

Versions after 2022-05-02: You can now add a column <Name>_ReadOnly to enable cell-level read-only control for cells.

Currently, this cell level is only available in AngularJS editable grids.