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### 3. Usage

General usage is straight forward and similar if not identical to the way most simple scientific calculators operate. Click on the KCalc button to bring up the configuration dialog.

### 3.1 Result Stack

Each time you click the enter button or press the 'equal' or 'Enter' or 'Return' keys, the display result is written to KCalc's result stack. You can navigate through the result stack by pressing the up and down arrow keys.

### 3.2 Percent Function

The percent function works somewhat different from that of most calculators. However, once understood, its enhance functionality proves quite useful. See the section on the percent function in the "Comments on specific functions" section for a details explanation of the percent functionality.

### 3.3 Fixed Precision

Click the fixed precision check-box on the configure dialog if you whish to fix the number of digits which are displayed past the period.

### 3.4 Cut and Paste

- Pressing the left mouse button on KCalc's display will place the displayed number on to the clip-board.
- Pressing the right or middle mouse button on KCalc's display will paste the clip-board content into the display if the content of the clip-board is a valid floating point number.

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