There are a few weird actions you can perform using the arrow keys and enter in Excel. For starters, you can use the arrow keys to move around the worksheet one cell at a time. You can also use them to select a range of cells. To do this, simply hold down the shift key while using the arrow keys to select the range of cells you want. Another weird action you can perform is using the enter key to create a new line within a cell. To do this, simply press alt + enter within the cell. This is useful for creating lists or paragraphs within a cell.
You can also use the arrow keys and enter to navigate through dialog boxes in Excel. Simply press the tab key to move from one field to the next, and press enter to select the currently highlighted option. This can be useful when working with complex dialog boxes that have multiple fields.
Finally, you can use the arrow keys and enter to create shortcuts in Excel. For example, you can use the up and down arrow keys to quickly scroll through a worksheet, or you can use the left and right arrow keys to move between tabs in a workbook. You can also use enter to quickly select a cell or range of cells without having to click on it.