The best performance is achieved when the HTML content size is 1 MB or less.
On the Column Properties page, select the Controls tab, and then select Add control. On the Home tab, select Change Properties. On the legacy form designer canvas, add or create a text column or select an existing text column, such as the account table Description column. In the form designer on the command bar, select Switch to classic. Select the form, and then select Edit form. Go to Solutions, open the solution that you want, open the table that you want, and then select the Forms tab. The rich text editor control can be used with single or multi-line text columns. You can create a new text column and configure the control, or replace an existing text column.