Why qemu monitor’s term width = 100 ?

Boot qemu/kvm-qemu with ‘-curses’ option, switch qemu monitor with pressing Alt + 2. But qemu monitor’s term width is 100, then qemu prompt is wrapped.

QEMU 0.9.1 monitor - type 'help' for more information
                    (qemu)
                                        (qemu)
                                                            (qemu)

(qemu)
                    (qemu)
                                        (qemu)
                                                            (qemu)

(qemu)
                    (qemu) info kvm
                                        kvm support: enabled
                                                            (qemu)

Xfce4 terminal windows width is 80 as defaults. Expand width 100.

QEMU 0.9.1 monitor - type 'help' for more information
(qemu)
(qemu)
(qemu)
(qemu)
(qemu)
(qemu)
(qemu)
(qemu)
(qemu) info kvm
kvm support: enabled
(qemu)