libxbase64-doc 3.1.2-13build1 (i386 binary) in ubuntu focal

 Xbase (formerly known as xdb, also formerly known as xBase) is a collection
 of specifiations, programs, utilities and a C++ class library for
 manipulating Xbase type datafiles and indices.
 .
 Xbase is useful for accessing data in legacy dBase 3 and 4 database files as
 well as a general light-weight database engine. It includes support for
 DBF (dBase version 3 and 4) data files, NDX and NTX indexes, and DBT
 (dBase version 3 and 4). It supports file and record locking under *nix
 OS's.
 .
 This package contains the documentation for Xbase distributed with Xbase.