Mitsubishi Electric MELSENSOR VS70 Series Setting Manual / Spreadsheet page 36

Reference lines
A reference line indicates one dependency which is constituted by one precedent and one dependent.
A small circle at the end of the arrow indicates the precedent cell, and the  part of the arrow indicates the destination cell.
Blue: Normal precedents
Red: Precedents in error
Green: Normal dependents
Yellow: Dependents in error
(1) Precedent cell
(1) Precedent cell (with error)
(1) Dependent cell
(1) Dependent cell (with error)
2 BASIC OPERATIONS FOR SPREADSHEET
34
2.6 Debugging a Spreadsheet
(1)
(1)
(1)
(1)