<!DOCTYPE html> <html> <head> <title>Stretchy mover</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> </head> <body> <!-- See bug 687807 --> <math> <mover> <mo stretchy="true">‖</mo> <mn>BBBBBBBBB</mn> </mover> </math> </body> </html>
