Applications that currently use Terminal control codes can be migrated by introducing the new logic to send the dynamic list of attributes when necessary.

However, there might be some differences between terminal behavior and the highlighting that can be applied to Form based controls. For example, many of the T27 codes work on the basis of 'apply until turned off, or the end of the line', hence an entire line could be highlighted by the application of one code to the beginning of the line, regardless of how many fields might be on that line. (The converse is that you often required an 'on code' and an 'off code' if you wanted to apply the attribute to one field only)

To handle this situation, the programmer would be required to apply the attributes to all fields on the line.

For example, a T27 might show:

patient # Surname Given Names

32224563 Smith John

patient # Surname Given Names

32224563 Smith John

Depending on the application, you might also find other variations between terminal behavior and this dynamic presentation mechanism (for example, “Blink” is not supported as a default attribute).