Man pages matching name xmclipboardinquirependingitems in section 3:

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