HP 49g Graphing Calculator - Manual (Page 63)

Operating modes
There are four modes of operation within Equation Writer. These are:
® Entry mode
This is the default mode. If you are using
another mode, Equation Writer retvuns to
Entry mode whenever you enter a value.
® Tenn selection mode
Use this mode when you want to modify
existing tenns. You can select only one
term at a time.
® Selection mode
You use this mode when applying algebraic
operations to components of an
expression.
® Cursor mode
You use this mode to select components of
an expression.
Working with modes
Equation Writer’s functionality varies depending on the mode that you are
using.
Using Entry mode
1. Enter a term or operator to apply to the term immediately to the left of
the cursor.
2. Press ® to select terms to the left of the cursor to which you want to
apply the next operator or fimction. Each time you press ®, more
terms to the left are selected.
Creating and editing expressions Page 3-5