If the font list element tag is not present, the default XmFONTLIST_DEFAULT_TAG is used. Here are some examples of specifying a font set.
Let Xlib select the fonts without specifying a font list element tag:
*fontList: -dt-application-medium-r-normal-*-m*-*-*-*-m-*
Let Xlib select the fonts and specify a font list element tag as MY_TAG:
*fontList: -dt-application-medium-r-normal-*-m*-*-*-*-m*:MY_TAG
Let Xlib select the fonts, specify a font list element tag for bold fonts, and use the default font list element tag for the others:
*fontList: -dt-application-medium-r-normal-*-m*-*-*-*-m-*:,\ -dt-application-medium-r-normal-style2-m*-*-*-*-m-*:BOLD