Question

which key is used to remove moving dashed lines in the selected cell​

Answer 1

Answer:

To get rid of it:

Place your cursor into the paragraph immediately preceding the line.

Go to Format, Borders and Shading (Word 2002-2003) or click the Border drop-down in the Paragraph section of the Home tab of the Ribbon (Word 2007 and up)

Click None (or No Borders) to turn off all the borders.