How to Select All lines to match to Invoice

Is there a quick way to match all lines/distribution lines of a PO to the invoice.  AP staff has no way to 'Select all' lines with a single click so they have to click on each check box on the match screen and one by one on hundreds of lines.  This is especially tedious on large POs', associated to agreement with many lines.  It's a tedious process to click on each line on the 'Match to PO' screen, and most of the time all lines do match with no variance so we expect to have the option for a single