Math Expression Cursor Placement for Easier Touch Editing

The patent changes the parameter of cursor positioning based on the type of character that was last edited. When an operator is edited, the cursor moves to the input position for the next character according to mathematical expression rules, rather than simply positioning it behind the pasted content. This dynamic parameter adjustment resolves the contradiction by making the cursor position adaptive to the editing context.

The system automatically determines the appropriate cursor position based on the last edited character type without requiring manual intervention. The editing apparatus self-adjusts the cursor position according to predefined rules for operators and operands, eliminating the need for users to manually reposition the cursor after pasting.

The patent implements preliminary action by pre-defining the cursor positioning rules before the user performs any editing operations. The editing apparatus stores in advance the rules for determining cursor positions based on character types (operators vs. operands), so that when editing occurs, the system can directly apply these pre-established rules without complex real-time computation.

The system uses parameter changes by switching between different cursor positioning modes based on the last edited character type. When an operator is detected, the system applies one set of positioning rules; when an operand is detected, it applies another set. This parameter-based approach manages complexity through structured conditionality rather than monolithic decision logic.