If the screen position was equal to all underscores or a 
space, what would be the resulting value for this 
assignment?  Here's the assignment.

<TESET DocId=TextTrim(Screen(1,4,8),"_")>

The Trace file shows DocId as:

BEFORE = XYZ           --(Previous value of DocId)
AFTER = (rc=0)         --(Value after assignment)

Which logic statement would evaluate to true if BeforeDocId 
was equal to "abcdef"?


<TEIF BeforeDocId <> "" AND TextTrim(Screen(1,4,8),"_")=""> 
or
<TEIF BeforeDocID <> "" AND TextTrim(Screen(1,4,8),"_")=" ">

Neither seems to work for us.