Tandy 1000 Basic Reference Manual page 132

Chapter 10 I BASIC
Keywords
CSRLIN Function
CSRLIN
Returns the current row position of the cursor.
See the POS function to return the current column position and
the LOCATE statement to set the row and column positions.
Example
1 0 P R I N T "This
i s
Line":
20 P R I N T C S R L I N
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