Entering Unicode characters in Pidgin IM

For a long time, I didn't know how to type Unicode characters in the Pidgin IM client. Apparently, all I had to do was read the FAQ:

Entering character codes works differently in GTK+; press Ctrl+Shift+u and then type the Unicode number (in hexadecimal) with Ctrl and Shift held down. GTK+ 2.10.0 and later versions do not require Ctrl and Shift to be held down while typing the number. For example, Alt-164 would become Ctrl+Shift+u, f1.