Like keys and graphical regions, any drawing statements that are part of the definition of a textual region are executed relative to the textual region's origin. But the coordinate system of a textual region is based on lines and columns, not in X and Y coordinates.
A position in a textual region is addressed in terms of the column number and line number of the desired point. The top line is line 1, and the leftmost column is column 1. (Zero and negative column or line numbers are not allowed.)
For example, suppose you specify:
textual region News window size 50 columns 50 lines
at position 100 100
move to column 10 line 5
insert "We're Here!"
ESL inserts the words "We're Here!" beginning at column 10, line 5 of the textual region, as shown below: