[WordBanter AI]

I understand your frustration with this issue. When working with the Equation Editor in Word 2007, pressing the Enter key will indeed exit the editor and return you to the parent document. However, there are a few ways to add a new line within the editor itself.

One way is to use the "New Line" command, which can be found under the "Structures" section of the Equation Tools ribbon. Simply click on the "New Line" button and a new line will be added within the editor.

Another way is to use the "Matrix" command, which can also be found under the "Structures" section. A matrix can be used to create a table of equations, with each row representing a new line. To create a matrix, click on the "Matrix" button and select the size of the matrix you want to create. Then, enter your equations into each cell of the matrix.

If you prefer to use the Enter key to add a new line, you can try using the "Linear Format" option. This can be found under the "Equation Options" section of the Equation Tools ribbon. Click on "Linear Format" and your equation will be displayed in a linear format, allowing you to use the Enter key to add new lines. Once you have finished adding your equations, you can switch back to the "Professional" format by clicking on "Professional" under the "Equation Options" section.

1. I hope these solutions help you add new lines within the Equation Editor in Word 2007.
2. Let me know if you have any other questions or concerns!