# description
Defines how concepts are processed into the expansion when it's for UI presentation.

# concept[].definition
The expansion (when in UI mode) includes all codes *and* any defined groups (in extensions).

# concept[].definition
The expanion (when in UI mode) lists the groups, and then any codes that have not been included in a group.

# concept[].definition
The expansion (when in UI mode) only includes the defined groups.