This dialog is invoked from the right click context menu when a string variable is being selected. You can also use the CTRL-F2 shortcut key or one of the variable windows context menu. It has three types of display. The first is a mixed display which presents both an hexadecimal and ascii view of the variable data. This is the view demonstrated below.
In this example a 256 byte string termfile$ is being displayed in both hexadecimal and ascii. The mouse can be used to click on any of the bytes in either area and the offset into the string will be displayed. Here byte 23 is selected.
The second displays only the string by itself ignoring any characters below 20 or ' '.
The third is only available when the variable you are looking at is a row buffer for a database table and there is an open connection to that database. This will display any data present in the row buffer, in a table format corresponding to field data.
This window can also be used to modify the data of the variable. You can double-click anywhere on the data display to bring up a dialog box to modify this data. If you click in the hexadecimal part you will be allowed to change the specific value you clicked on. If you click in the string part you will be allowed to over type a string starting from this point.