Man pages matching name xmvacreatemanagedscrolledwindow in section 3:

XmVaCreateManagedScrolledWindow.3.en	debian 10 / libmotif-dev
XmVaCreateManagedScrolledWindow.3.en	debian 11 / libmotif-dev
XmVaCreateManagedScrolledWindow.3.en	debian 12 / libmotif-dev