What does ISTR stand for?

ISTR stands for "I Seem to Remember"

How to abbreviate "I Seem to Remember"?

"I Seem to Remember" can be abbreviated as ISTR

What is the meaning of ISTR abbreviation?

The meaning of ISTR abbreviation is "I Seem to Remember"

What does ISTR mean?

ISTR as abbreviation means "I Seem to Remember"