Binary package “libxt-doc” in ubuntu focal
X11 toolkit intrinsics library (documentation)
libXt provides the X Toolkit Intrinsics, an abstract widget library upon
which other toolkits are based. Xt is the basis for many toolkits, including
the Athena widgets (Xaw), and LessTif (a Motif implementation).
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This package contains the X Toolkit Intrinsics C API documentation.