TVD([condition])
 
Description
 Get item text of the first depend item if the condition is true.
Please see 
using dependencies on setting and use of depends folder.
Examples
 TVD()
always returns the item text of the depends item
the lack of a condition implies always true
TVD(left(ITT,1)='~')
will only return the item text of the depends item if the first character of the item text is ~
Related Rules
 FV(), 
FVD(), 
FVC(), 
TV(), 
TVC()