[caret-users] Q) What could be the same as secondary underlay in overlay/underlay-surface page?

[Yune S. Lee]

 Hello,
 I'm trying to find the metric pulldown menu in the 
overlay/underlay-surface page and select AFM_BURTON_04_Vibrotactile_ 
EARLY_BLIND) by following page 24 of the tutorial (1.22.2).
 Yet, I guess the secondary underlay no longer exists in the newer 
version and wonder how I instead select the file.
 Your help would be appreciated.

 Thanks,
 YSL